Istat
ISTAT Information system on quality of statistical production processes SIQual
Home Glossary Helped Search Multidimensional search Complete list Report Documents
Versione italiana | Comments | FAQ
Survey design home  > Survey design  

Process description   
Insights   
Summary metadata   
Legislation   
Observed phenomena   
Reporting and observational units   
Process Design   
Phases of production process   
Generalised software   
Questionnaires   
    
Documents   
Process documents   
Standard quality reports   
    
Data dissemination   
Classifications   
Publications   
Online data   
    
Report   


[S] - European Union Statistics on Income and Living Conditions (EU-SILC)
Survey design (Sampling design thesaurus)
Partly single-stage and partly two-stage sampling with stratification of primary sampling unit (since 31/12/2004)

General information
Validity periodsince 31/12/2004
Approximate size32000
DescriptionThe planning of the sampling design has been guided by requirements set by Eurostat on different aspects of the survey, i.d.: type of parameters to be produced, periodicity and reference of the questions, and the precision of some cross-sectional and longitudinal estimates. In addition to Eurostat requirements, specific sub-national geographical domains of Istat interest have been considered. For the sake of estimates' precision comparability, Eurostat requires a minimum sample size under the hypothesis of two-stage simple random sample where the first stage is represented by the municipalities and the elementary units are the resident households.
Panel survey informationPanel survey : The survey has a cross-sectional and a longitudinal component. The sample for each survey edition is based on four rotational groups (each sized 1/4 of the total sample size). Each group stays in the sample for 4 years in a row and each year the sample is renewed including a group.
Selection process: part with two stages
Information on first stage
Primary sampling units -
Approximate size762
Primary Sampling Unit Description -
Stratification variablesDemographic size of the municipality
Inclusion probabilitiesProportional to the following variable:
Selection schemePoisson
Information on elementary sampling units
Reporting units and frame
HouseholdsMunicipal population registerMunicipality population registersMaster Sample del Censimento Permanente della Popolazione e delle Abitazioni
Inclusion probabilitiesEqual
Selection schemeSystematic
Selection process: part with one stage
Information on elementary sampling units
Reporting units and frame
HouseholdsMunicipal population registerMunicipality population registersMaster Sample del Censimento Permanente della Popolazione e delle Abitazioni
Inclusion probabilitiesEqual
Selection schemeSystematic
Estimation process
Estimation process information
Variables with known population totals used to constrainPopulation: Age classes, Gender, Region, Geographical area
Variables with known population totals used to constrain description -
DomainsGeographical area: Five geographical areas (North-west, North-east, Centre, South, Islands)
Regions: NUTS 2
Italy
Domains description -