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Table 1 HIV prevalence estimates from ANC registers and ANC sentinel surveillance sites by demographic characteristics, Kenya, 2010

From: Evaluation of Kenya’s readiness to transition from sentinel surveillance to routine HIV testing for antenatal clinic-based HIV surveillance

Variable

Antenatal clinic register

Antenatal clinic sentinel surveillance sites

Prevalence Ratio PMTCT/ANC SS

Unweighted

Weighted HIV prevalence a (95 % CI b )

HIV+

Total

HIV prevalence a (95 % CI b )

HIV+

Total

Overall

884

13064

6.5 (5.1, 8.0)

846

13,745

6.2 (4.6, 7.7)

1.1

Age group (years)

 15–19

59

1898

3.1 (2.2, 3.9)

62

1754

3.5 (2.2, 4.9)

0.9

 20–24

279

4941

5.5 (4.0, 7.0)

253

5051

5.0 (3.6, 6.4)

1.1

 25–29

260

3377

7.3 (5.1, 9.6)

249

3694

6.7 (4.8, 8.7)

1.1

 30–34

193

1861

9.9 (7.6, 12.2)

190

2083

9.1 (6.7, 11.5)

1.1

 35–39

73

806

8.9 (6.5, 11.3)

70

892

7.9 (5.3, 10.4)

1.1

 40–49

20

181

10.4 (6.0, 14.9)

22

271

8.1 (4.2, 12.1)

1.3

 15–24

338

6501

4.8 (3.6, 6.1)

315

6805

4.6 (3.3, 5.9)

1.0

Marital status

 Single

79

1251

6.3 (4.6, 8.1)

117

1669

7.0 (5.6, 8.4)

0.9

 Married

788

11637

6.5 (5.0, 8.0)

709

11,904

6.0 (4.4, 7.5)

1.1

 Separated/divorced

7

64

9.3 (2.1, 16.4)

5

72

6.9 (0.98, 12.9)

1.3

 Widowed

6

25

26.7 (9.0, 44.3)

11

30

36.7 (16.3, 57.0)

0.7

 Missing

4

87

5.7 (0.0, 13.1)

4

70

5.7 (0.15, 11.3)

1.0

Gravidity

 One

146

3968

3.6 (2.7, 4.6)

149

4344

3.4 (2.6, 4.3)

1.1

 Two

259

3562

7.0 (5.4, 8.7)

236

3710

6.4 (4.6, 8.1)

1.1

 Three

219

2364

9.0 (7.0, 11.0)

211

2479

8.5 (6.2, 10.8)

1.1

 Four or more

258

3138

8.0 (5.3, 10.7)

248

3163

7.8 (5.2, 10.4)

1.0

Facility setting

 Rural

319

3863

7.6 (3.46, 11.7)

246

3845

6.4 (2.8, 10.0)

1.2

 Urban

367

4618

8.0 (6.2, 9.7)

406

4971

8.2 (5.8, 10.6)

1.0

 Mixed

198

4583

4.3 (3.2, 5.4)

194

4929

3.9 (2.9, 4.9)

1.1

Region

 Central

49

1125

3.7 (1.7, 5.6)

49

1419

3.5 (2.5, 4.4)

1.1

 Coast

64

1554

4.2 (1.8, 6.7)

65

1510

4.3 (2.6, 6.0)

1.0

 Eastern

64

1268

5.0 (4.1, 5.9)

61

1507

4.1 (2.6, 5.5)

1.2

 North Eastern

3

368

0.82 (0.0, 1.7)

8

392

2.0 (0.89, 4.0)

0.4

 Nairobi

150

1975

7.7 (5.9, 9.4)

184

2232

8.2 (5.1, 11.4)

0.9

 Nyanza

255

1537

15.6 (8.7, 22.6)

233

1509

15.4 (9.3, 21.9)

1.0

 Rift Valley

154

3427

4.5 (3.5, 5.4)

159

3449

4.6 (3.5, 5.7)

1.0

 Western

145

1810

8.1 (5.2, 11.1)

87

1727

5.0 (3.0, 7.1)

1.6

  1. Abbreviations: ANC antenatal clinic, PMTCT prevention of mother-to-child transmission, CI 95 % confidence intervals
  2. a Prevalence estimates are percentages and exclude records that were missing HIV test results
  3. b We calculated 95 % CI for PMTCT using the Wald asymptotic CI and for ANC sentinel surveillance using the exact CI