| General information |
| Validity period | since 31/12/2004 |
| Approximate size | 32000 |
| Description | The 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 information | Panel 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 size | 762 |
| Primary Sampling Unit Description | - |
| Stratification variables | Demographic size of the municipality |
| Inclusion probabilities | Proportional to the following variable: |
| Selection scheme | Poisson |
| Information on elementary sampling units |
| Reporting units and frame | | Households | Municipal population register | Municipality population registers | Master Sample del Censimento Permanente della Popolazione e delle Abitazioni |
|
| Inclusion probabilities | Equal |
| Selection scheme | Systematic |
| Selection process: part with one stage |
| Information on elementary sampling units |
| Reporting units and frame | | Households | Municipal population register | Municipality population registers | Master Sample del Censimento Permanente della Popolazione e delle Abitazioni |
|
| Inclusion probabilities | Equal |
| Selection scheme | Systematic |
| Estimation process |
| Estimation process information |
| Variables with known population totals used to constrain | Population: Age classes, Gender, Region, Geographical area |
| Variables with known population totals used to constrain description | - |
| Domains | Geographical area: Five geographical areas (North-west, North-east, Centre, South, Islands)
Regions: NUTS 2
Italy |
| Domains description | - |
