Sample characteristics: Italy
| Census/survey characteristics | |
| Type | Census |
| Title | The 14th General Population Census and General Housing Census |
| Statistical agency | National Institute of Statistics |
| Population universe | All population who reside in Italy and all persons who do not live in Italy but are present at the time of the census |
| De jure or de facto | De jure |
| Census/survey day | 2001-10-21 00:00:00 |
| Questionnaire | A single booklet of Household Form with five sections: 1) List A: household members, 2) List B: individuals who do not usually reside in the accommodation, 3) Section I, information on the dwelling (for all persons in List A and List B), 4) Section II, information on the individuals who usually reside in the accomodation (persons on List A), and 5) Section III, information on individuals who do not usually reside in the dwelling (persons on List A). Section I to III are de-identified with names removed. |
| Type of fieldwork | Self enumeration |
| Microdata sample characteristics | |
| Sample design | Systematic sample of every 20th dwelling. |
| Sample fraction | 0.05 |
| Sample size (person records) | 2990739 |
| Sample weights | Self-weighting. Expansion factor = 20. |
| Units identified in microdata | |
| Dwellings | Yes |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | Not specified |
| Households | A group of people, bound by marriage, kinship, affinity, adoption, guardianship or emotional ties, who are partners and live in the same Municipality. |
| Collective dwellings | Not specified |
| Census/survey characteristics | |
| Type | Census |
| Title | 15th General Population and Housing Census |
| Statistical agency | National Institute of Statistics |
| Population universe | All citizens or foreigners registered to stay in Italy |
| De jure or de facto | De jure |
| Census/survey day | October 9, 2011 |
| Questionnaire | A single census form for dwellings and persons |
| Type of fieldwork | Direct and self-enumeration |
| Microdata sample characteristics | |
| Sample design | 5% sample drawn by national statistics office |
| Sample fraction | 0.05 |
| Sample size (person records) | 2968065 |
| Sample weights | Self-weighting (expansion factor=20) |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | Yes |
| Smallest geography | Region |
| Unit definitions | |
| Dwellings | Dwelling refers to a room (or set of rooms) that is: regularly dedicated to residential use; separate (i.e. surrounded by walls and covered by a roof); independent (with at least one external access that is either independent or through shared entry areas - road, courtyard, stairs, landings, common balconies, terraces, etc. - access, in other words, does not require passing through other dwellings); incorporated in a building (or constitutes a building). |
| Households | Group of persons who are cohabiting as usual residents of a dwelling |
| Collective dwellings | Collective residential structure refers to facilities used to house large groups of people and/or one or more families. This category includes hotels, hospitals, rest homes for senior citizens and reception centers and institutes of various kinds (religious, healthcare-related, welfare support, educational, etc.). |
| Census/survey characteristics | |
| Type | Survey |
| Title | Labour Force Survey |
| Statistical agency | National Institute of Statistics (ISTAT) |
| Population universe | All members of families residing in Italy, even if temporarily emigrated abroad, excluding permanent members of institutional quarters (hospices, religious institutes, barracks, etc.). |
| De jure or de facto | De jure |
| Census/survey day | Continuous survey |
| Field work period | Continuous survey on a quarterly basis. Information is collected with reference to all the weeks of each quarter, through a uniform distribution of the sample over these weeks. The survey is carried out during all weeks of the year. |
| Questionnaire | A single booklet with a general record of respondents and 12 sections: 1) Classification of individuals; 2) Labor status in the reference week (for people aged 15 or more); 3) Main job for employed people; 4) Second job for employed people; 5) Previous work experience (for unemployed people); 6) Search for employment (for people aged 15 or more); 7) Employment services and agencies (for people aged 15-74); 8) Education and training (for people aged 15 or more); 9) Self-perceived condition and residency (for people aged 15 or more); 10) Information on the household (for the last family member interviewed); 11) Closing questions for the interviewer; 12) Pending coding. |
| Type of fieldwork | Direct enumeration (first interview) and computer-assisted telephone interviewing (CATI) |
| Microdata sample characteristics | |
| Sample design | Two-stage sample with stratification of the first-stage units. The first-stage units are municipalities; second-stage units are families. Within each province municipalities are stratified according to population size. Municipalities larger than a predetermined population threshold are included in the sample; remaining municipalities are stratified by population size and extracted with probability proportional to the population size. The sample municipalities remain the same over time. In each quarterly survey, around 1,400 municipalities and 70,000 families are selected. The families included in the sample are interviewed 4 times within 15 months. Each family is interviewed for two consecutive quarters; an interruption follows for the next two quarters, after which the family is interviewed again for another two quarters. Microdata samples distributed by IPUMS are from Quarter 1 surveys. |
| Sample fraction | varies |
| Sample size (person records) | ~100,000 |
| Sample weights | Survey weights computed by statistical agency should be used for most types of analysis |
| Units identified in microdata | |
| Dwellings | No |
| Vacant units | No |
| Households | Yes |
| Collective dwellings | No |
| Smallest geography | 2011-2013: Region; 2014 and after: Province |
| Unit definitions | |
| Households | The family is understood as a de facto family, that is as a group of people linked by bonds of marriage, kinship, affinity, adoption, protection or by emotional bonds, cohabiting and having habitual residence in the same municipality; if the selected family cohabits with other families, only the extracted family is interviewed. |