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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
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