Data collection mode: Standardized face to face Interviews, CAPI (Computer Aided Personal Interviewing)
Sample: Swiss resident population aged 15 and over, living in private households, who speak one of the main national languages (German, French or Italian). No upper age limit.
Sampling: Single stage equal probability systematic sample (no clustering); the sampling is done by the Swiss Federal Statistical Office out of the register sample frame
- Gross sample size 2941
- Net sample size (without ineligibles): 2907
- Interviews: 1532 (Response rate=52.4%)
Design:
- cross-sectional, repeteaded every 2 years, part of the questionnaire being identical
- Fieldwork period: 29 August 2014 - 20 February 2015
Fieldwork institute: M.I.S. Trend SA, Lausanne
No weighting, all weight=1, according to the sample design (all respondents have the same probability to be selected)
