Table 6 Cox proportional hazards model on time until discontinuation of baseline method, by demographic. characteristics, number of living children, HIV status, and method type, N = 952.
From: Contraceptive use and discontinuation among women in rural North-West Tanzania
Factors | Number of discontinuations | Rates (95% CI) per 100 women | Unadj HRs (95% CI) | p-value | Adjusted HRs (95% CI) | p-value |
|---|---|---|---|---|---|---|
HIV status | ||||||
Negative | 341 | 3.17 (2.85,3.52) | 1 | |||
Positive | 32 | 2.94 (2.08,4.16) | 0.83 (0.59,1.17) | 0.2800 | 0.89 (0.63,1.29) | 0.5200 |
Methods | ||||||
Implants | 90 | 2.17 (1.76,2.66) | 1 | |||
Pills | 35 | 3.70 (2.66,5.16) | 1.73 (1.17,2.56) | 0.0060 | 1.86 (1.25,2.77) | 0.0020 |
Injection | 225 | 4.19 (3.68,4.78) | 1.97 (1.54,2.52) | 0.0001 | 2.04 (1.59,2.61) | 0.0001 |
IUD | 11 | 1.24 (0.69,2.25) | 0.56 (0.30,1.05) | 0.0710 | 0.60 (0.32,1.13) | 0.1160 |
Other methods | 12 | 2.08 (1.18,3.66) | 0.96 (0.52,1.75) | 0.8850 | 1.07 (0.58,1.99) | 0.8190 |
Age | ||||||
15–24 | 92 | 3.90 (3.18,4.78) | 1 | |||
25–34 | 184 | 3.05 (2.64,3.53) | 0.77 (0.60,0.99) | 0.0390 | 0.72 (0.56,0.93) | 0.0110 |
35+ | 97 | 2.74 (2.25,3.35) | 0.68 (0.51,0.90) | 0.0080 | 0.67 (0.50,0.90) | 0.0070 |
Education | ||||||
None/some primary | 98 | 3.32 (2.72,4.05) | 1 | |||
Completed primary | 222 | 3.06 (2.68,3.48) | 0.92 (0.72,1.16) | 0.4700 | ||
Secondary+ | 52 | 3.05 (2.33,4.01) | 0.92 (0.66,1.29) | 0.6180 | – | – |
Number of living children | ||||||
< 3 | 127 | 3.44 (2.89,4.09) | 1 | |||
3+ | 246 | 2.99 (2.64,3.39) | 0.86 (0.69,1.06) | 0.160 | – | – |