World Values Survey 2001, Wave 4

Sample size: 1002

The interviews were allocated to both the rural and urban sample. For each of these there is a male and female split and a total sample. The total sample is split up between actual amount of interviews and the number of sampling points per province. For the Bulawayo province, 84 interviews must be conducted in urban areas in total, which means that 14 samples points need to be drawn. The sample had to be representative of urban as well as rural populations. Roughly the distribution was as follows: Zimbabwe: 37% urban; 63% rural . A standard form of sampling instructions was sent to each agency to ensure uniformity in the sampling procedure. Markinor stratified the samples for each country by region, sex and community size. To this end, statistics and figures that were supplied to us by the agencies were used. However, we requested the agencies to revise these where necessary or where alternatives would be more effective. The agencies then supplied the street names for the urban starting points, and made suggestions for sampling procedures in rural areas where neither maps nor street names were available. From sample-point level, the respondent selection was done randomly according to a selection Kish-grid method used by Markinor (the first two pages of the master questionnaire). Substitution was permitted after three unsuccessful calls. Six interviews were conducted at each sample point. The male/female split was 50/50.

Remarks about sampling:
Selecting the rural points: Due to the fact that there is so many rural points, we use the method of selecting smalls towns and then conducting the interviews within a 20km radius of the boundaries of the selected town.