Table 2: Result of Multiple Logistic Regression Analysis of incidence of pregnancy among HIV positive women on ART in Finote Selam general hospital, Oct. 2016 to Sep. 2019.
Covariate |
Category |
B |
S.E. |
Wald |
df |
Sig. |
Exp(B)
|
95.% CI EXP (B) |
|
Lower |
Upper |
||||||||
WHO clinical stage |
Stage I (ref.) |
|
|
16.320 |
3 |
0.001* |
|
|
|
Stage II |
-1.285 |
0.760 |
2.857 |
1 |
0.091 |
0.277 |
0.062 |
1.228 |
|
Stage III |
-5.085 |
1.310 |
15.065 |
1 |
0.000* |
0.006 |
0.000 |
0.081 |
|
Stage IV |
-3.745 |
1.846 |
4.114 |
1 |
0.043* |
0.024 |
0.001 |
0.882 |
|
Spouse's HIV status |
Negative (ref.) |
|
|
6.871 |
2 |
0.032* |
|
|
|
Positive |
1.614 |
0.742 |
4.725 |
1 |
0.030* |
5.023 |
1.172 |
21.526 |
|
Unknown |
-0.464 |
0.761 |
0.371 |
1 |
0.542 |
0.629 |
0.141 |
2.797 |
|
Marital status
|
Married (ref.) |
|
|
25.368 |
3 |
0.000* |
|
|
|
Unmarried |
-4.326 |
1.040 |
17.315 |
1 |
0.000* |
0.013 |
0.002 |
0.101 |
|
Divorced |
-4.904 |
1.111 |
19.485 |
1 |
0.000* |
0.007 |
0.001 |
0.065 |
|
Widowed |
-3.920 |
1.328 |
8.715 |
1 |
0.003* |
0.020 |
0.001 |
0.268 |
|
Contraception use
|
Never (ref.) |
|
|
19.940 |
3 |
0.000* |
|
|
|
Rarely |
-.1.026 |
0.978 |
1.102 |
1 |
0.294 |
0.358 |
0.053 |
2.435 |
|
Mostly |
-4.100 |
1.105 |
13.774 |
1 |
0.000* |
0.017 |
0.002 |
0.144 |
|
Always |
-3.671 |
1.106 |
11.019 |
1 |
0.001* |
0.025 |
0.003 |
0.222 |
|
CD4 cell count |
< 250 (ref.) |
|
|
22.550 |
3 |
0.000* |
|
|
|
250-350 |
-2.700 |
1.286 |
4.410 |
1 |
0.036* |
0.067 |
0.005 |
0.835 |
|
351-500 |
1.594 |
1.060 |
2.263 |
1 |
0.133 |
4.925 |
0.617 |
39.322 |
|
> 500 |
2.254 |
1.030 |
4.789 |
1 |
0.029* |
9.522 |
1.265 |
71.674 |
|
Time on ART follow up |
>= 24 months |
|
|
11.978 |
2 |
0.003* |
|
|
|
25-48 months |
3.062 |
0.888 |
11.897 |
1 |
0.001* |
21.363 |
3.750 |
121.681 |
|
> 48 months |
2.135 |
0.926 |
5.315 |
1 |
0.021* |
8.460 |
1.377 |
51.973 |
|
Body weight of women |
< 50 kg (ref.) |
|
|
6.284 |
2 |
0.043* |
|
|
|
50-60 kg |
0.438 |
0.797 |
0.303 |
1 |
0.582 |
1.550 |
0.325 |
7.387 |
|
> 60 kg |
1.949 |
0.907 |
4.616 |
1 |
0.032* |
7.018 |
1.186 |
41.515 |
|
Occupation
|
Employed(ref.) |
|
|
10.108 |
2 |
0.006* |
|
|
|
Unemployed |
-2.334 |
0.827 |
7.976 |
1 |
0.005* |
0.097 |
0.019 |
0.490 |
|
Housewife |
-2.636 |
0.904 |
8.499 |
1 |
0.004* |
0.072 |
0.012 |
0.422 |
|
Age
|
15-24 (ref.) |
|
|
16.401 |
3 |
0.001* |
|
|
|
25-29 |
0.166 |
0.761 |
0.048 |
1 |
0.827 |
1.181 |
0.266 |
5.249 |
|
30-35 |
-2.423 |
1.030 |
5.538 |
1 |
0.019* |
0.089 |
0.012 |
0.667 |
|
> 35 |
-5.035 |
1.333 |
14.255 |
1 |
0.000* |
0.007 |
0.000 |
0.089 |
|
Child alive |
Have a child |
-1.892 |
0.664 |
8.111 |
1 |
0.004* |
0.151 |
0.041 |
0.554 |
Constant |
|
1.569 |
2.442 |
0.413 |
1 |
0.520 |
4.804 |
|
|
ref. = Reference category which is the first category; * = significant at 5% significance level