Generations and Gender Survey Italy Wave 1 & Wave 2en
GGS Italy Wave 1 & Wave 2en
Italian National Institute of Statisticsen
The Generations and Gender Survey (GGS) provides micro-level data with the aim of significantly improving the knowledge base for social science and policymaking in Europe and developed countries elsewhere. In Europe 2020, the European Union develops a strategy "to help us come out stronger from the crisis and turn the EU into a smart, sustainable and inclusive economy delivering high levels of employment, productivity and social cohesion". The economic crisis affects not only day-to-day decisions, but also fundamental choices at all stages of people's lives: marriage and childbearing, the combination of employment and caring responsibilities for the young and the old, retirement, housing, and ageing well. The GGS has been developed to provide scientists with high-quality data to contribute scientifically grounded answers to these key policy questions. Survey content focuses on intergenerational and gender relations between people, expressed in care arrangements and the organization of paid and unpaid work. Key feature of the survey are:
- Cross-national comparability. In each country data is collected on the basis of a common international questionnaire and guidelines about the methodology. Data processing includes central harmonization of national datasets.
- A broad age range. It includes respondents between the ages of 18 and 80.
- A longitudinal design. It has a panel design, collecting information on the same persons at three-year intervals.
- A large sample size. It has an average of 9,000 respondents per country at Wave 1.
- A theory-driven and multidisciplinary questionnaire. It provides data for policy relevant research by demographers, economists, sociologists, social policy researchers, social psychologists and epidemiologists. The questionnaire is inspired by the theory of planned behavior.
- Possibility to combine the survey data with macro data provided by the GGP Contextual Database. This combination enables analyses of individuals and families in their cultural, economic, political, social and policy contexts.
Italian country presentations at the GGP International Working Group Meetingsen
Transition to adulthood
Informal and formal care
Well-being and health
Whole territory of the country.en
WAVE 1 Method: Face-to-Face (personal interview) + self-administered questionnaire. Technique: Paper and Pencil.
WAVE 2 Method: Telephone interview Technique: CATIen
WAVE 1 ACTIONS
Dealing with nonresponse 1.1 Screening: Availability to participate to subsequent surveys was asked. 1.2 Refusal conversion: Usual techniques of refusal conversion (an advance letter by Istat was sent to the selected households). 1.3 Incentives: No.
Tracking of sampled units 2.1 Respondent contact information: Yes, contact details of the respondent were collected such us: addresses, home telephone number and mobile number of each family member. 2.2 Other contact information: Yes, contact information of each family member. 2.3 Cards: On-line thank-you letter was sent showing the main results of the survey on www.istat.it. 2.4 Additional surveys: No 2.5 Administrative records: For records without a telephone number, Istat asked to the municipality to provide information about their possible change in residential address in order to track them elsewhere.
WAVE 2 ACTIONS
Dealing with nonresponse 1.1 Screening: At first it was asked whether the respondent named … was at home and available to be interviewed. 1.2 Refusal conversion: 1.3 Incentives: No incentives
Tracking of sampled units 2.1 Respondent contact information: Yes 2.2 Other contact information: No, but the information about the family was used to ask about him/her in order to minimize attrition. 2.3 Cards: No, but the report of the survey was disseminated on the web site. 2.4 Additional surveys: No 2.5 Administrative records: Yes, especially to look for individuals who moved from the household in wave1.
WAVE 1 DATA COLLECTION
Interviewers 1.1 Total number of interviewers: 1,645. 1.2 Number of interviewers in the field: 1,645. 1.3 Network organization: 22 regional coordinators. 1.4 Working arrangement of interviewers: Istat makes use of the Municipal Council networks for selecting interviewers, responding to the criteria defined by Istat. Interviewers are mainly employees of the municipal office itself, but also students and others part-time workers. The interviewers belong to a list of household surveys' interviewers that is regionally and centrally monitored. The archive of interviewers is centrally supervised and collects information about interviewers' performances along their past experiences. 1.5 Payment of interviewers: Interviewers were paid per successful interview. Moreover, they received a reimbursement for training and transmission of quality information.
Interviewer training 2.1 General interviewing: There were instruction meetings in each province, run by Istat regional offices, held with the interviewers from the sampled municipalities (first step training). Istat regional offices were, in turn, trained by the Istat central office (second step training). 2.2 Survey specific: Yes. General information about the Programme was presented. 2.3 Length: The first step training (Istat central office to regional offices) took two days. The second step training took one day and documentation and slides were disseminated. At the end of the training meetings, a form was filled in collecting the participants' assessments. 2.4 Control of performance: Respondents were randomly recontacted to ascertain the occurred interview. There were two attempts to evaluate each interviewer and in case of false interview all families of the same interviewer were contacted. Only a small portion, less than 4% of the interviews, was considered irregular. Moreover, Istat checked the questionnaires in order to evaluate their quality. 2.5 Interviewer survey: No.
Contact protocols 3.1 Advance letter: In order to limit the refusal rate Istat send a letter, before starting up the survey. The letter informed families about the interview and aimed at stimulating the interest of the respondents, explaining the reasons why their collaboration is important, reassuring people about their most common fears and allowing them to understand the expected goals and results. 3.2 Cold contacts: Telephone. 3.3 Scheduling / scattering: The interviewer organized the contacts by him/herself. 3.4 Contact history: No. 3.5 Min number of contacts: No. 2.6 Max number of contacts: No.
Questionnaire localization 4.1 Validation: No. 4.2 Pre-test: No. However, the survey was previously conducted in 1998 on an independent sample and, in that case, a pilot study was performed. New questions pertaining to GGS were tested independently. 4.3 Length of interview: Average length of interview per household: 70 minutes.
WAVE 2 DATA COLLECTION
Interviewers 1.1 Total number of interviewers: about 20 interviewers, scheduled in 3 groups per day 1.2 Number of interviewers in the field: 1.3 Network organization: centralized 1.4 Working arrangement of interviewers: Fully employed and Contracted - other 1.5 Payment of interviewers: Per interview
Interviewer training 2.1 General interviewing: Yes, interviewers were trained about general interviewing technique especially to focus on the follow-up conditions and to the aim of the survey. They were trained by Istat researchers. They have experience on survey interviews because most of them had already worked for Istat. 2.2 Survey specific: Yes, interviewers were also trained about GGS issues. Generally speaking, they received briefing from Istat researcher with PowerPoint presentations. A FAQ document was also prepared to support them. After the training and some tests of interview, there was also a de-briefing. 2.3 Length: Two days 2.4 Control of performance: Yes, Istat personnel and researchers supervised the fieldwork to support and monitor the adequacy of the interviews. 2.5 Interviewer survey: Not a survey, but de-briefings were organized to clarify doubts and provide general aid. Moreover, the monitoring system allow to link interviewer performances to contacts and valid interviews.
Contact protocols 3.1 Advance letter: Yes, an advance letter was sent to all sampled individuals. It expresses acknowledgment for the participation in wave1, it explains the aim of the follow-up survey, the relevance for the study of generations and gender, it informs about the protection of personal data and it provides contact information and a toll-free number where to ask for further information. The letter is signed by the President of Istat. 3.2 Cold contacts: 3.3 Scheduling / scattering: Yes, the scheduling procedure distinguishes between morning, afternoon and evening. Moreover, an appointment could be fixed with respondents any day of the week, included on Saturdays and Sundays. 3.4 Contact history: Yes, there was the so-called "Scheda contatti" 3.5 Min number of contacts: 2.6 Max number of contacts: Yes, 11.
Questionnaire localization 4.1 Validation: No re-translation was done 4.2 Pre-test: Yes, normal survey route. Moreover the questionnaire was also tested on part of the available sample. 4.3 Length of interview: Average duration about 1 hour.
In case the respondent was busy or not available, we attempted to agree upon a new appointment. Also if the respondent was unavailable to answer to the landline, we offered the possibility to call him/her back on the mobile.en
WAVE 1 SAMPLING PROCEDURE
Sampling frame 1.1 Type of frame: Population register from municipalities selected at first stage. 1.2 Frame coverage: not available 1.3 Frame size: 24,000 households selected from 755 primary units (municipalities), about 10% of total municipalities. 1.4 Level of units available: Municipalities.
Sampling method 2.1 Sampling method type: Two-stage sampling with stratification of primary sampling unit. First stage: selection of primary sampling units (municipalities) stratified by region, municipal typology and population size. Inclusion probabilities are proportional to demographic size (PPS) of municipalities in each stratum; the selection is performed according to the Madow method (Madow, W. G. 1949. "On the Theory of Systematic Sampling, II," Annals of Mathematical Statistics, 20, 333-354.) Second stage: elementary sampling units (households) are selected from Municipal population offices with Systematic sample and equal inclusion probabilities. 2.2 Sampling stage definition
- PSU: Municipalities.
- SSU: Households.
- TSU: not applicable 2.3 Sampling stage size
- PSU: About 800.
- SSU: 24,453.
- TSU: not applicable 2.4 Unit selection: The primary sampling units of the sample design (the municipalities) are stratified by region, municipal typology and size in terms of population. Inclusion probabilities are proportional to demographic size and the selection scheme is random. 2.5 Final stage unit selection: Final units are not stratified and are selected by systematic random (i.e. use of step) with random seed. 2.6 Within Household unit selection: All persons in the household were selected. 2.7 Stratification: Only primary units are stratified as described above, with the aim to obtain a self-weighting sampling design at regional level. 2.8 Sample size
- Starting size sample: 24,453 households.
- Aimed total size at Wave 1: About 50,000 individuals of all ages.
- Aimed total size at Wave 3: No wave 3 planned. 2.9 Estimated Non-response
- Initial non-response: About 15%.
- Yearly attrition: None.
- Non response measures: None, post stratification is applied in weighting process.
- Within household non-responses measures: Proxy response was used. The woman is usually selected as proxy of other household members.
WAVE 2 SAMPLING PROCEDURE
Sampling frame 1.1 Type of frame: Name list of respondents aged 18-64 years in wave 1 (2003) with an available telephone number (mobile or not) 1.2 Frame coverage: Target population: 10,000 individuals 1.3 Frame size: 19,565 individuals 1.4 Level of units available: individuals
Sampling method 2.1 Sampling method type: There are 11,511 households, and a total amount of 25,102 individuals (aged 18-64 years in 2003), with an available telephone number. As the aim was to reach a target of 10,000 valid interviews, it was decided to select randomly 19,565 individuals from all households. 2.2 Sampling stage definition
- PSU: The sample design is a complex one as it derives from the sample design adopted for wave 1 (i.e. two-stage sampling procedure) and the selection of people aged 18-64 in wave 1 to be intervied in wave 2 (Tertiary sample unit).
- TSU: 2.3 Sampling stage size
- TSU: 19,565 individuals 2.4 Unit selection: At least one individual selected from each household. 2.5 Final stage unit selection: According to the name list 2.6 Within Household unit selection: According to the name list 2.7 Stratification: 2.8 Sample size
- Starting size sample: 19,565 individuals
- Aimed total size at Wave 1: 10,000 individuals
- Aimed total size at Wave 3: 2.9 Estimated Non-response
- Initial non-response:
- Yearly attrition:
- Non response measures: Oversampling. In order to reach 10,000 valid interviews, the selected sample is 19,565 individuals
- Within household non-responses measures: Proxy answers were accepted only if it was impossible to book an appointment with the target individual.
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