World Values Survey 2012, Wave 6

Sample size: 1500

Sample:
Five stages were observed during the sample selection up to respondent selection. 1) Selection of PSU In all the 10 regions/provinces of the country, Primary sampling units were selected from a comprehensive list of PSU that reflec rural sample split. 2) Selection of sectors Using a random numbers book, the sectors were selected from an exhaustive list of possible sectors within the particular PSU. The entry point into each was determined by the supervisor/team leader identifying all the possible entry points into the sector with youngest member of the interviewing team selecting the entry point to the sector. This became the starting point for the team. 3) Selection of starting points Upon entry to a starting point, the team leader would then establish each interviewer’s random walk route. From this point onwards, the interviewer then determined the route for his day’s work as well using the date rule to establish the first household he would consider for interviewing on each particular day. Urban street maps and rural grid maps were also made available to interviewers for ease of identifying the exact starting point. 4) Selection of households After having identified the first household to carry out an interview using the date rule, every subsequent fifth household in high density suburbs and every third in low density suburbs was then selected for the next interview. In rural areas a metric distance of about 150 metres was observed in between successful contacts. Our definition of household was a building with a cooking facility, were occupants living together shared at least one meal a day recognizing a head of the household. In order for a particular person to qualify to be interviewed, he or she should have lived in the particular household for the past six months from the day of interview. 5) Selection of respondents The fifth and final stage in the sampling process was the selection of final respondent within each particular household. The birthday rule was applied in selecting the final respondent. All names of members of the household aged 18 years and above, both male and female were listed down. Interviewers then asked to speak to the person who had the last birthday in the household as the final respondent. Substitutions/refusals/call backs Three attempts spread over two days were made before any attempts to substitute a respondent were made. Substitution of respondents was only done with the consent of the supervisor by going to the household that was directly next to the original household. In case of outright refusals by respondent or household, the interviewer would then also go to the next household and continue until a successful contact was made.