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Table 2 Population-based HIV survey 2005: rates of testing consent and HIV prevalence estimates

From: Population and antenatal-based HIV prevalence estimates in a high contracepting female population in rural South Africa

Women Age group Women eligible for inclusion in the population-based survey Of women eligible for HIV testing those asked to consent to test Of all women contacted those consenting to test Of all women contacted those not consenting to test Diagnosed with HIV infection3 95% CIs Odds ratios 95% CIs
    n %1 n %2 n %2 n %      
All 15–19 5 3669 3207 87.4 1658 51.7 1549 48.3 114 6.9 5.7 8.3 - - -
  20–24 2967 2307 77.8 1030 44.6 1277 55.4 294 28.7 26.0 31.6 5.4 4.3 6.8
  25–29 1842 1478 80.2 501 33.9 977 66.1 248 49.6 45.1 54.1 13.2 10.2 17.2
  30–34 1563 1327 84.9 470 35.4 857 64.6 220 47.0 42.4 51.6 11.9 9.2 15.5
  35+ 4435 4032 90.9 1634 40.5 2398 59.5 451 27.7 25.6 30.0 5.2 4.1 6.4
  Total 14476 12351 85.3 5293 42.9 7058 57.1 1327 25.2 24.0 26.4 - - -
Pregnant 4 15–19 5 335 311 92.8 172 55.3 139 44.7 19 11.2 6.9 16.9 - - -
  20–24 475 427 89.9 200 46.8 227 53.2 52 26.1 20.2 32.8 2.8 1.6 5.0
  25–29 244 215 88.1 77 35.8 138 64.2 32 41.6 30.4 53.4 5.7 2.9 10.9
  30–34 183 169 92.3 64 37.9 105 62.1 21 32.8 21.6 45.7 3.9 1.9 7.9
  35+ 207 197 95.2 95 48.2 102 51.8 20 21.3 13.5 30.9 2.1 1.1 4.3
  Total 1444 1319 91.3 608 46.1 711 53.9 144 23.8 20.5 27.4 - - -
Parity (all women) Nulliparous 5 5282 4324 81.9 1960 45.3 2364 54.7 232 11.9 10.5 13.4 - - -
  Parity 1+ 9194 8027 87.3 3333 41.5 4694 58.5 1095 33.0 31.5 34.7 3.7 3.1 4.3
Residency location (all women) Rural 5 9116 7790 85.5 3560 45.7 4230 54.3 755 21.3 20.0 22.7 - - -
  Peri-urban 4417 3756 85.0 1636 43.6 2120 56.4 547 33.5 31.2 35.9 1.9 1.6 2.1
  Urban 943 805 85.4 97 12.0 708 88.0 25 26.0 17.6 36.0 1.3 0.8 2.1
  1. 1 Presented as a proportion of all women eligible for inclusion in the 2005 population-based survey
  2. 2 Presented as a proportion of all women contacted by HIV survey fieldworkers between January and December 2005
  3. 3 HIV test result not available for 27 women (8 nulliparous; 19 parity 1+;4 pregnant women) providing a blood sample
  4. 4 Reported as pregnant between 1st July 2004 and 30th June 2005
  5. 5 Baseline groups for odds ratios