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Metadata for Official Statistics

Title

European Union Labour Force Survey 2010

EU-LFS 2010 contains the Module on Reconciliation between work and family life. The first aim is to establish how far persons participate in the labour force as they wish and if not, whether the reasons are connected with a lack of suitable care services for children and dependant persons. The second aim is to analyse the degree of flexibility offered at work in terms of reconciliation with family life. The third aim is to estimate how often career breaks occur and how far leave of absence is taken.

Target population: persons aged 15-64 years old

Geographical Coverage

The EU-LFS 2010 covers "the 27 Member States of the European Union, three EFTA countries (Iceland, which at the same time is a candidate country, Norway and Switzerland), and three candidate countries, i.e. Croatia, the former Yugoslav Republic of Macedonia and Turkey [(Macedonia and Turkey are not included in the micro-data)]." (Eurostat (2012): Quality report of the European Union Labour Force Survey 2010, p. 4.)

Datasets availability table and release calendar (Eurostat)


Time Period Covered

The EU-LFS 2010 "is designed as a continuous quarterly survey with interviews spread uniformly over all weeks of a quarter. Each reference week starts on Monday and ends on Sunday. The first week of a year or quarter is defined as the week that includes the first Thursday of the year or the quarter.
All countries conduct the LFS as a continuous survey, except Turkey." (Eurostat (2012): Quality report of the European Union Labour Force Survey 2010, p. 5.)

Country Specific Information: EU-LFS 2010

  • LV - Latvia

    Producer

    Central Statistical Bureau of Latvia


    Universe

    All persons aged 15 to 74 years who are permanently resident in Latvia.


    Source Of Sampling Frame

    Population Census 2000, Population Register, statistical register of dwellings, statistical register of households


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Households


    Stratification Criteria

    Region, urban/rural


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    37.06 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The initial weights are calculated according to the sample design, with all persons within the same PSU having equal design weights. The design weights are adjusted using the data of response level in each PSU.


    Coverage Adjustment Weight: Method

    These weights are then adjusted on the basis of demographic data. Demographic data are broken down by degree of urbanisation, age groups and sex for adjustment of the quarterly weights. For adjustment of the yearly weights demographic data are broken down by degree of urbanisation, age groups and sex as well as in NUTS 3. All persons within the same household have equal initial weights, but the final weights tend to be diverse.


  • LU - Luxembourg

    Corresponding National Study

    Erhebung über Arbeitskräfte


    Producer

    infas Institute for Applied Social Sciences


    Universe

    Persons registered as residing in one of the Luxembourgian communes.


    Source Of Sampling Frame

    Telephone numbers list


    Sampling Design

    Probability

    • random
    • not stratified
    • one stage


    Primary Sampling Units

    Households


    Secondary Sampling Units

    Not used


    Stratification Criteria

    No stratification is carried out.


    Sampling Method

    Households to be contacted are selected by random digit dialing.


    Number Of Rotational Groups

    0

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    37.06 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    Poplation estimates on 1 January are used for weighting the results. Data from the survey are weighted ex post by sex, age classes and nationalty. All persons of these 288 have the same weight, calculated by dividing the population in each stratum by the number of interviewed persons in the same stratum.


  • LT - Lithuania

    Producer

    Statistics Lithuania


    Universe

    All persons usually living in the households of the selected dwellings, including those who are temporarily abroad for a period of less than a year.


    Source Of Sampling Frame

    Population Register


    Sampling Design

    Probability

    • random
    • stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Stratification is carried out by size categories of municipalities
    within NUTS 3 region.


    Number Of Rotational Groups

    4, 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    34.71 %

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The initial household design weights are calculated, taking into account the unequal selection probabilities of the households.


    Coverage Adjustment Weight: Method

    These are then adjusted by the use of auxiliary information relating to population data on 60 municipalities and the intersection of 13 age-groups, sex and urban/rural.


  • HR - Croatia

    Producer

    Republic of Croatia; Central Bureau of Statistics


    Universe

    The target population comprises all persons living in private households who usually reside in Croatia or intend to stay in Croatia for at least 12 months.


    Source Of Sampling Frame

    2001 Population Census


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Counties, city of Zagreb


    Sampling Method

    Sampling design: Random regarding the Primary Sampling Units, Systematic regarding Secondary Sampling Units.


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    41.11%

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The non-response weights are calculated using the weighting classes method. There are 57 weighting classes. In Croatia, municipalities are officially divided into two goups, according to the level of urbanisation. Weighting classes are 17 city quarters in City of Zagreb, and, in each of 20 counties, two groups of two types of municipalities.


  • RO - Romania

    Producer

    National Instititue of Statistics Romania


    Universe

    Persons resident in Romania.


    Source Of Sampling Frame

    Census 2002


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Dwelling clusters


    Stratification Criteria

    Region, urban/rural


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    26.70 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The responding dweling units are categorised by the characteristics county (NUTS 3) and urban/rural residency.


    Coverage Adjustment Weight: Method

    The weights are calibrated to the best latest available population totals by region/urban-rural residency, gender, age groupds and the household totals by region, using the SAS macro Calmar. The totals known at population level from current demographic statistics are based on the 2002 Population Census.


  • NO - Norway

    Producer

    Statistics Norway


    Universe

    The resident population is the de jure one based on the Central Population Register.


    Source Of Sampling Frame

    Central Population Register


    Sampling Design

    Probability

    • random
    • stratified
    • one stage


    Primary Sampling Units

    Households


    Secondary Sampling Units

    Not used


    Stratification Criteria

    County (NUTS 3)


    Number Of Rotational Groups

    8

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Register,Survey


    Percentage Of Proxy Interviews

    13.91 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The estimation is done by a post-stratification method using information from the Central Population Register, the Register of Employees and the Tax Register. The expansion factors are calculated according to the population totals aged 15-74.


  • HU - Hungary

    Producer

    Hungarian Central Statistical Office


    Universe

    Persons living in the private households in Hungary, included are also household members temporarily absent or living abroad if they have common income/consumption with the surveyed household.


    Source Of Sampling Frame

    2001 Population and Housing Census


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Administrative units, size categories of localities


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    44.29 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    For any stratum of the sample, the unique design weight is defined as the ratio of the total number of dwellings in the stratum to that in the sub-sample for that stratum.


    Coverage Adjustment Weight: Method

    Calibrated weights are determined with the method of generalised raking. For each of the 20 geographical units, the calibration variables or controls are totals for age-sex groups, total number of household and total resident population in cities with 50 000+ inhabitants. The calibration is organised so that all members in a sample household have the same calibrated weight as that household.


  • FR - France

    Corresponding National Study

    Questionnaire logement de l’enquête emploi


    Producer

    National Institute of Statistics and Economic Studies


    Universe

    Population aged 15+ living in private households on French metropolitan territory.


    Source Of Sampling Frame

    Population Census of 1999, Tax register (new part of the sample)


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Dwelling clusters


    Stratification Criteria

    French region (NUTS2)*type of urban unit


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    28.75 %

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    A correction for non-response is made, using several criteria: size of urban unit, number of rooms in the housing, type of housing, number of new dwellings and region, income of the households, age of the inhabitants, social housing or not, rented accommodation or property. Another correction for non-response is made using the answers to the non-response survey: the employment and unemployment rates are adjusted to the ones obtained when including the non-response survey.


    Coverage Adjustment Weight: Method

    An adjustment to the population estimates (at the middle of the quarter) by age groups and gender, at NUTS 2 level, is made for each independent sub-sample. An adjustment is also made on the number of dwellings and the number of newly-built dwellings.


  • BG - Bulgaria

    Universe

    The resident population includes all persons usually residing in Bulgaria, including persons temporarily abroad (less than one year).


    Source Of Sampling Frame

    2001 Population Census


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Households


    Stratification Criteria

    Administrative districts, urban/rural


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    31.83%

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    Data obtained by the survey are post-stratified by 28 districts, urban/rural areas, sex and four age groups. All persons in each of these 488 strata have the same weight.


    Coverage Adjustment Weight: Method

    The weight is calculated by dividing the population in each stratum by the number of interviewed persons in the same stratum.


  • BE - Belgium

    Corresponding National Study

    Continuous Labour Force Survey /
    Ständige Erhebung über Arbeitskräfte


    Producer

    Directorate-general Statistics and Economic Information


    Universe

    Private households, where at least one person is younger than 77.


    Source Of Sampling Frame

    National Register of Persons


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Households


    Stratification Criteria

    Region


    Number Of Rotational Groups

    0

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    16.53 %

    Design Weight: Target

    Person


    Non-response Weight: Method

    Adjustments for non-response are done using a posteriori stratification by province (NUTS 2), sex and age.


    Coverage Adjustment Weight: Method

    In each of the post-strata thus obtained, a weight is calculated whose numerator is the population at the middle of the quarter according to the National Register of Persons and whose denominator is the number of usable responses.


  • DE - Germany

    Corresponding National Study

    The German micro-census /
    Mikrozensus


    Producer

    Statistische Ämter des Bundes und der Länder


    Source Of Sampling Frame

    1) Census data from 1987: survey base for former BRD. 2) Central population register of the German Democratic Republic: data for former DDR. 3) Register of new dwellings


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Dwelling blocks


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Region and size of building


    Number Of Rotational Groups

    4

    Date of Data Collection

    single reference week


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Non-response Weight: Method

    A two-stage adjustment procedure is used.
    (a) If possible, limited data are collected for households which fail to respond. These data can include: number of members of the household, and for households comprising only one person: age and sex. From this data, the weightings of respondent households are increased to take account of non-response in the region.
    (b) The sample, weighted to take account of non-response, is stratified a posteriori by region, sex, age and nationality and is extrapolated to the population.


  • DK - Denmark

    Universe

    Persons with domicile in Denmark according to the Central Population Register living in either private or collective households.


    Source Of Sampling Frame

    Central Population Register and the Unemployment Register (further enhanced with information from the labour market register and the income register).


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Registered unemployment


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Register,Survey


    Percentage Of Proxy Interviews

    3.51%

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The strata are weighted separately. Weighting is performed by using a combination of sex, age group, socio-economic status, income, nationality, level of education, status in the unemployment register, region, and whether the dwelling place was recently changed or not.


  • FI - Finland

    Corresponding National Study

    Finnish Labour Force Survey


    Producer

    Statistics Finland


    Universe

    People aged 15 to 74 who are registered as permanently resident in Finland, including those who are temporarily abroad for a period of less than a year, members of the armed forces, and the institutional population. It also includes foreign nationals who have been living in Finland for at least a year.


    Source Of Sampling Frame

    Total population database, based on the Population Information System of the Population Register Centre


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Region


    Number Of Rotational Groups

    5; 3-(1)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Register,Survey


    Percentage Of Proxy Interviews

    52.39 %

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The 252 post-strata are constructed by sex, age group and region.


    Coverage Adjustment Weight: Method

    The post-stratified weights are calibrated according to gender, age group, region, reference week and status in Ministry of Labour's job-seeker register.


  • IE - Ireland

    Corresponding National Study

    Quarterly National Household Survey


    Producer

    Central Statistics Office Ireland


    Universe

    Persons who usually reside on Irish territory living in private households.


    Source Of Sampling Frame

    Census of Population 2006


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Dwelling blocks


    Secondary Sampling Units

    Households


    Stratification Criteria

    Region, urbanisation


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    46.97%

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The survey results are weighted to agree with population estimates broken down by age, sex and region (NUTS 3).


  • AT - Austria

    Corresponding National Study

    The Austrian micro-census / Mikrozensus


    Producer

    Statistik Austria


    Universe

    Persons who have their main residence on Austrian territory during the reference week.


    Source Of Sampling Frame

    Register of Residents


    Sampling Design

    Probability

    • random
    • stratified
    • one stage


    Primary Sampling Units

    Dwellings


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Bundesland


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    26.16 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Coverage Adjustment Weight: Method

    For estimation of the results weights are calculated using the population counts of the Register of Residents and the household forecasts of Statistics Austria. The weights are calculated using the following criteria: Bundesland (NUTS 2), age groups, nationality, size of households and gender. The calibration procedure is carried out with iterative proportional fitting. Finally each member of the household gets the same weight.


  • CZ - Czech Republic

    Producer

    Czech Statistical Office


    Universe

    Persons living in private households, disregarding the type of their stay (permanent, temporary or non-registered).


    Source Of Sampling Frame

    Register of Census Areas


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Region (districts, Prague 1 district)


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    44.93%

    Design Weight: Target

    Dwelling


    Non-response Weight: Method

    The weights are based on post-stratification to 12 age groups,
    sex and the 77 districts. Demographic figures for each quarter of 2010 were forecasted from the definitive demographic data for end-of-year 2009, taken into account migration and natural increase of population.


  • CY - Cyprus

    Producer

    Statistical Service of Cyprus, Ministry of Finance


    Universe

    Persons who usually reside in Cyprus or intend to stay in Cyprus for at least 12 months.


    Source Of Sampling Frame

    Population Census of 2001


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Districts, urban/rural


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    31.86 %

    Design Weight: Target

    Dwelling


    Non-response Weight: Method

    The results are weighted a posteriori to the population households by sex and age groups. No district or urban/rural weighting is carried out.


  • SE - Sweden

    Corresponding National Study

    Arbetskraftsundersökningen


    Producer

    Statistics Sweden


    Universe

    Persons between 15 and 74 who are domiciled in Sweden according to the population register.


    Source Of Sampling Frame

    Statistics Sweden's Register of the Total Population


    Sampling Design

    Probability

    • random
    • stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Sex, age group, region


    Number Of Rotational Groups

    8

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    2.97 %

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The estimates build on regression estimators (GREG) with a set of auxiliary information. The auxiliary variables are sex*age, region (NUTS 3), nationality at birth, information on employed persons by industry and persons who have enrolled at a job-centre as unemployed and are looking for work. The registers which are used to obtain the auxiliary variables are the Register of Total Population, the Employment Register and the National Labour Markets Board's Register of job-seekers.


  • SI - Slovenia

    Producer

    Statistical Office of the Republic of Slovenia


    Universe

    Persons living in private households and foreign nationals are included, if they correspond to the criteria of household.


    Source Of Sampling Frame

    Central Population Register


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Addresses


    Stratification Criteria

     Nuts3 regions, size and type of settlement (urban/rural)


    Number Of Rotational Groups

    5; 3-(1)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    56.34 %

    Design Weight: Target

    Address


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The data are weighted for unequal probability of selection and for non-response and post-stratified according to the known population distribution: age, sex and region (NUTS 3 level). The post-stratification is done on a household level, with members of the same household thus receiving identical weights, and benchmarked to population totals. Institutional population is included in population totals.


  • SK - Slovakia

    Corresponding National Study

    pracovných síl


    Producer

    Statistical Office of the Slovac Republic


    Universe

    Every person aged 15+, living in the household of the selected dwelling without regard to permanent, temporary or unregistered stays.


    Source Of Sampling Frame

    Census of Population 2001


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    NUTS 4


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    33.81 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    Data from the survey for all persons participating in the survey were weighted by administrative data on total population by region, sex and age groups. Extrapolation to the population is done at the level of individuals. The population and the sample are the subject of a post-stratification by NUTS 3 administrative region, sex and age groups.


  • IS - Iceland

    Producer

    Statistics Iceland


    Universe

    The resident population comprises persons registered with domicile in Iceland, excluding persons attached to foreign missions and registered persons living abroad for more than six months, but including Icelandic personnel in missions abroad.


    Source Of Sampling Frame

    National Population Register


    Sampling Design

    Probability

    • random
    • not stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    No stratification.


    Number Of Rotational Groups

    5; 3-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Register,Survey


    Percentage Of Proxy Interviews

    2.64 %

    Design Weight: Target

    Person


    Non-response Weight: Method

    The a posteriori stratification variables are age groups and sex.


  • UK - Great Britain

    Producer

    UK Office for National Statistics


    Universe

    Persons living in private households, including persons who are temporarily absent. In Great Britain, an additional sample is drawn to cover persons living in National Health Service/Hospital Trust accomodation.


    Source Of Sampling Frame

    GB: Royal Mail's Postcode Address File, NI: Rating and Valuation List


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Addresses


    Secondary Sampling Units

    Not used


    Stratification Criteria

    By frame


    Sampling Method

    Northern Ireland: single random sampling design +
    Far north of Scotland: telephone number is PSU


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    33.66 %

    Design Weight: Target

    Address


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The adjustment procedure is based on a three-stage a posteriori stratification. Figures are based on independent demographic estimates. The stratification variable for the first stage is the Local Authority District or Unitary Authority. This stage makes it possible to make adjustments for different rates of non-response in the various local authority areas and ensures that the results are geographically representative. The second-stage variables are sex and age group. This stratification is intended to ensure that the age profile of the 16-24 year old is correct at national level. The variables in the third stage are region, sex and age group. The three stages are applied by means of an iterative procedure designed to ensure that the estimates are consistent with the stratification variable sets.


  • IT - Italy

    Producer

    Italian National Institute of Statistics


    Universe

    The reference population is the population recorded in the registry offices in the Italian municipalities living in private households.


    Source Of Sampling Frame

    Municipal registers


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Municipality


    Secondary Sampling Units

    Households


    Stratification Criteria

    Size categories of municipalities within NUTS3 region


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    15.03 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    Correction factors for the households' non-response are worked out as the reciprocal of the response ratios. Intermediate weights corrected for non-response are then computed multiplying initial weights by these correction factors.


    Coverage Adjustment Weight: Method

    Starting from intermediate weights, final grossing weights are obtained solving a minimisation problem under constraints. The function to be minimised is the distance between final and intermediate weights; the constraints regard the estimates of some auxiliary variables that have to be equal to the totals in the reference population derived from external sources. Main constraints are population by gender and age groups at NUTS 2 level and population by gender and age groups of different width at NUTS 3 level. Final weights ensure that all members of a given household have the same weight.


  • MT - Malta

    Producer

    National Statistics Office


    Universe

    Private households in Malta, including people who are temporarily absent from the usual place of residence.


    Source Of Sampling Frame

    2005 Census


    Sampling Design

    Probability

    • not stratified
    • one stage


    Primary Sampling Units

    Households


    Secondary Sampling Units

    Not used


    Stratification Criteria

    No stratification


    Number Of Rotational Groups

    4, 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    46.26 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Coverage Adjustment Weight: Method

    A posteriori stratification at one level is performed by sex, age-group and district. This allows the tabulation of estimates at national and district levels. The totals are benchmarked to Census Population Totals. For weighting procedures, NUTS 4 and age groups are used.


  • PL - Poland

    Producer

    Central Statistical Office of Poland


    Universe

    All persons 15+ and over with usual residence in Poland.


    Source Of Sampling Frame

    Census, Register of housing units


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Census enumeration units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Region, urban/rural, urbanisation


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    36.53 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The weighted response rates are calculated for sampling units stratified a posteriori by six place-of-residence categories. The initial weights are adjusted by the response rates. The adjusted weights are also final for results concerning households.


    Coverage Adjustment Weight: Method

    The final step consists in modifying the adjusted weights using the population estimates stratified a posteriori by the urban-rural division, sex and age groups.


  • PT - Portugal

    Producer

    Statistics Portugal


    Universe

    Individuals residing in a private dwelling during the reference week.


    Source Of Sampling Frame

    2001 Census of Population and Housing, BGRI - Geographic Information Referencing Base


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Region (NUTS3)


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    46.62 %

    Design Weight: Target

    Dwelling


    Design Weight: Method

    Inverse of selection probability


    Coverage Adjustment Weight: Method

    The weight is derived as the product of a design weight (which incorporates design information and non-response) and a factor that calibrates the sample to the independent demographic estimates (using a posteriori stratification method by NUTS 2, sex and age groups; NUTS 3 by age groups; and NUTS 3 by sex).


  • CH - Switzerland

    Corresponding National Study

    SLFS – Swiss Labour Force Survey /
    SAKE – Schweizerische Arbeitskräfteerhebung


    Producer

    Federal Statistical Office FSO


    Universe

    All persons officially residing in Switzerland for the entire year. Swiss citizens, foreign citizens holding a permanent residence permit or a residence permit valid for at least one year, international civil servants, diplomats and their family members all fall into this category.


    Source Of Sampling Frame

    Telephone directory, Register of foreigners


    Sampling Design

    Probability

    • stratified
    • one stage


    Primary Sampling Units

    Households


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Region/size of region (in pop.)


    Number Of Rotational Groups

    4

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    3.09 %

    Design Weight: Target

    Person


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    The sample is stratified a posteriori by region (NUTS 3), marital status, age groups, sex, nationality groups. This procedure is applied iteratively. The expansion factor is a factor to the total population aged 15+.


  • ES - Spain

    Corresponding National Study

    Economically active population survey


    Producer

    Spanish Statistical Office


    Universe

    The population residing in private households for more than one year is covered, including servants; persons living in collective households and persons who are temporarily absent are sampled via relatives living in private households.


    Source Of Sampling Frame

    Census 2001, Population registers


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Households


    Stratification Criteria

    Population size of municipality, socio-economic characteristics of the population


    Sampling Method

    Sampling Design: Systematic regarding Primary Sampling Units, Random regarding Secondary Sampling Units


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    53.47%

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    Every quarter, population projections by age group and Spanish provinces (NUTS 3) are calculated. Projections by age and region are distributed by stratum in proportion to the population of each stratum. In each stratum, age group and region, the weighting is determined by the ratio of the projection to the sample size.


    Coverage Adjustment Weight: Method

    The sample is calibrated in order to adjust to the population disribution. Auxiliary information used is in the form of population projections by sex and age groups at NUTS 2 level, the nationality of the population aged 16+ at NUTS 2 level and by age and region. A linear weighting method is used, in which each member of the household aged 16+ has the same weight.


  • NL - Netherlands

    Corresponding National Study

    Enquête Beroepsbevolking


    Producer

    Statistics Netherlands


    Universe

    Persons residing in the Netherlands living in private households.


    Source Of Sampling Frame

    List of all addresses drawn up by the postal services in combination with the Population Register.


    Sampling Design

    Probability

    • systematic
    • stratified
    • multi-stage


    Primary Sampling Units

    Municipality


    Secondary Sampling Units

    Addresses


    Stratification Criteria

    Region (Corop), employment-exchange regions


    Number Of Rotational Groups

    5

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    45.19 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    All respondents are assigned an inclusion weight. These inclusion weights are calculated in such a way that unequal inclusion probabilities that occur because of the sampling method are corrected.


    Coverage Adjustment Weight: Method

    Final weights are determined. In this stage biases because of non-residence are reduced. For this, information on gender, age, ethnic background, place of residence and some other regional classifications are used. In addition, administrative sources on the income and registration at unemployment office are used. Also information on the correlation in the panel-overlap between subsequent quarters is used and all waves together are weighted in one step.


  • EE - Estonia

    Corresponding National Study

    Estonian Labour Force Survey


    Producer

    Statistics Estonia


    Universe

    The target population comprises all persons aged 15-74 years with permanent residence in Estonia living in both private and collective households.


    Source Of Sampling Frame

    Population Register


    Sampling Design

    Probability

    • systematic
    • stratified
    • one stage


    Primary Sampling Units

    Individuals


    Secondary Sampling Units

    Not used


    Stratification Criteria

    Group of regions by population size


    Number Of Rotational Groups

    4; 2-(2)-2

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    No


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    31.34%

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    For non-response adjustment the non-response correction factors are computed. The homogeneous response groups of reasonably uniform size of sampled households are formed on the basis of the place of residence of the household according to the non-response rate in the region. Within each group the correction factor is inversely proportional to the overall response rate in the region.


    Coverage Adjustment Weight: Method

    The weights are calibrated so that they produce exact population numbers in certain subgroups known from demographic data (including institutional population). For working-age persons the subgroups by sex, age, place of residence and Estonians/non-Estonians are considered. For this purpose the linear consistent weighting method is applied. For non-working-age persons the non-response adjusted household's weights are calibrated by sex and age.


  • EL - Greece

    Producer

    Hellenic Statistical Authority (EL.STAT)


    Source Of Sampling Frame

    Census 2001


    Sampling Design

    Probability

    • random
    • stratified
    • multi-stage


    Primary Sampling Units

    Area units


    Secondary Sampling Units

    Dwellings


    Stratification Criteria

    Region (NUTS3)


    Number Of Rotational Groups

    6

    Date of Data Collection

    Continuous survey


    Participation Mandatory

    Yes


    Type Of Data Source

    Survey


    Percentage Of Proxy Interviews

    42.97 %

    Design Weight: Target

    Household


    Design Weight: Method

    Inverse of selection probability


    Non-response Weight: Method

    No stratification is carried out a posteriori.