| | | |
ANC based HIV prevalence estimates1
|
Population based HIV prevalence estimates
|
Ratio of ANC and population based estimates2
|
C hi2 (p)3
|
|---|
|
All women
|
Crude
|
37.9
|
25.2
|
1.50
|
< 0.001
|
|---|
| | |
15–19
|
19.5
|
6.9
|
2.83
|
< 0.001
|
| | |
20–24
|
37.0
|
28.7
|
1.29
|
0.002
|
| | |
25–29
|
54.3
|
49.6
|
1.09
|
0.254
|
| | |
30–34
|
51.7
|
47.0
|
1.10
|
0.362
|
| | |
35+
|
3 6.5
|
27.7
|
1.32
|
0.053
|
| | |
Age standardised
|
36.2
|
27.5
|
1.32
|
< 0.001
|
| | |
Age & location
4
|
31.7
|
27.5
|
1.15
|
0.005
|
| | |
Age & catchment
5
|
35.6
|
27.7
|
1.29
|
< 0.001
|
|
Nulliparous
|
Crude
|
24.8
|
11.9
|
2.08
|
< 0.001
|
| | |
Age standardised
|
21.3
|
15.5
|
1.37
|
0.003
|
| | |
Age & location
4
|
20.1
|
15.9
|
1.26
|
0.037
|
| | |
Age & catchment
5
|
20.6
|
16.0
|
1.29
|
0.022
|
|
Parity 1+
|
Crude
|
46.4
|
33.0
|
1.41
|
< 0.001
|
| | |
Age standardised
|
43.0
|
34.4
|
1.25
|
< 0.001
|
| | |
Age & location
4
|
37.0
|
34.1
|
1.09
|
0.153
|
| | |
Age & catchment
5
|
41.6
|
34.5
|
1.21
|
< 0.001
|
|
Pregnant women
|
Crude
|
-
|
23.8
|
1.59
|
< 0.001
|
| | |
Age standardised
|
-
|
25.2
|
1.44
|
< 0.001
|
| | |
Age & location
4
|
-
|
25.3
|
1.25
|
0.006
|
| | |
Age & catchment
5
|
-
|
25.0
|
1.42
|
< 0.001
|
|
Clinic location (ANC); residency location (population)
|
Urban
|
Crude
|
40.7
|
26.0
|
1.56
|
0.006
|
| | |
Age standardised
|
39.2
|
27.1
|
1.47
|
0.023
|
| |
Peri-urban
|
Crude
|
36.5
|
33.5
|
1.09
|
0.277
|
| | |
Age standardised
|
36.8
|
36.5
|
1.01
|
0.930
|
| |
Rural
|
Crude
|
29.2
|
21.3
|
1.37
|
0.028
|
| | |
Age standardised
|
28.5
|
23.2
|
1.22
|
0.151
|
|
Projected clinic catchment (ANC); residence within projected clinic catchment (population)
|
Peri-urban/urban
|
Crude
|
40.7
|
30.5
|
1.33
|
< 0.001
|
| | |
Age standardised
|
38.2
|
33.5
|
1.14
|
0.039
|
| |
Rural/peri-Urban
|
Crude
|
39.4
|
27.2
|
1.45
|
0.001
|
| | |
Age standardised
|
38.2
|
29.3
|
1.30
|
0.018
|
| |
Rural
|
Crude
|
32.0
|
20.8
|
1.54
|
< 0.001
|
| | |
Age standardised
|
32.3
|
22.7
|
1.42
|
< 0.001
|
- 1 18 women excluded from the analyses with age not known
- 2 Ratio based on ANC totals when no direct comparable ANC group
- 3 Difference between two proportions (ANC-based HIV prevalence estimate compared to the population-based estimate)
- 4 Standardisation based on age and residency location (urban, rural and peri-urban) distribution within the ACDIS population
- 5 Standardisation based on age and predicted ANC clinic catchment (peri-urban/urban, peri-urban/rural and rural) distribution within the ACDIS population
