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Table 1 Overall (Age group, ≥15 years) participation and response rates (percentages) of the population-based surveys conducted between 1995–2003 in selected rural and urban areas of Zambia

From: Steep HIV prevalence declines among young people in selected Zambian communities: population-based observations (1995–2003)

   1995 1999 2003
Listed   5847 6235 6791
Absent   927 (15.9%) 1763 (28.3%) 1346 (19.8%)
De facto eligible (found)   4920 4472 5445
   Refused interview   108 (2.2%) 53 (1.2%) 185 (3.4%)
   Interviewed   4812 (97.8%) 4419 (98.4) 5260 (96.6%)
   Saliva test Accepted 4499 (93.5%) 4021 (91%) 4913 (93.4%)
  Refused 281(5.8%) 397 (9%) 347 (6.6%
  Lost 32 (0.7%) -- --
  Damaged/Mislabelled 162 264 162
Sample (Interviewed & tested, Less damaged/mislabelled) §   4337 (88.2%) 3757 (84%) 4751 (87.3%)
Final sample age 15–59 years   3158 3731 4751
Response (%) (Listed-[absent+refusals]/listed*100)   77.4% 64.5% 72.3%
  1. Notes: 1. §Percentages in the final sample analysed represents proportion of participation out of the de facto eligible population. This includes respondents aged ≥60 years in 1995 & 1999. 2. Information by sex was incomplete in the file linking the listed and interviewed respondents.