Table 1

WHO-sampling method[12,15]
Number of newly enrolled patients on ART per year Required sample size
1-75 Recruit all
76-110 75
111-199 100
200-250 110
251-299 120
300-350 130
351-400 135
401-450 140
451-550 145
551-700 155
701-850 160
851-1600 175
1601-2150 175
2151-4340 200
4341-5670 210
5671-10,000 215
>10,000 WHO advice required

WHO: World Health Organization.

Fokam et al.

Fokam et al. BMC Public Health 2013 13:308   doi:10.1186/1471-2458-13-308

Open Data