Community views about routine HIV testing and antiretroviral treatment in Botswana: signs of progress from a cross sectional study

Table 1 Calculation of site weights

Stratum	Census population	Proportion of census population (a)	Sample population	Proportion of sample population (b)	Site weight (a/b)
Rural	757,329	0.4569	731	0.4759	0.9601
Urban	718,480	0.4335	705	0.4590	0.9445
Capital	181,627	0.1096	100	0.0651	1.6832
Total	1,657,436		1536

The census figures are for 2001. The sample population is the number of individuals interviewed in the households. The site weight for each group of sites is the proportion of the census population in those sites (a) divided by the proportion of the sample population in those sites (b). The proportions in rural and urban sites in the sample are close to those in the census population, while the proportion in the capital (Gaborone) in the sample is slightly lower than in the census population.

ISSN: 1472-698X