The survey covers adults aged 15 years and older, who are living in the nine provinces of South Africa.
Radio self-completion diaries were placed with respondents to complete in their homes over a seven-day period, for which they were offered a small incentive.
The sample was equally apportioned between males and females with the exception of mines, hostels and domestics. At each sampling point a cluster of two addresses was drawn.
In each household, the main respondent was selected by means of a Random Grid. Four calls were made before substitution could occur.
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