Risk factor | Cases N = 160 | Controls N = 549 | Crude OR (95% CI) | Adjusted OR (95% CI) Model 3a | Adjusted OR (95% CI) Model 4b | Adjusted OR (95% CI) Model 5c | ||
---|---|---|---|---|---|---|---|---|
No. | % | No. | % | |||||
Long-term contraceptive practices | ||||||||
Early discontinuation | 45 | 26.3% | 80 | 13.3% | 3.0 (1.9–4.7) | 1.75 (1.1–3.2) | 4.9 (1.7–14.4) | |
Late discontinuation | 47 | 27.5% | 107 | 17.8% | 2.3 (1.5–3.6) | 2.3 (1.4–3.6) | 3.5 (1.6–7.6) | |
Ineffective use (Reference) | 68 | 39.8% | 362 | 60.3% | 1.00 | - | 1.00 | 1.00 |
Type of contraceptive last used | ||||||||
Modern method | 117 | 73.1% | 349 | 63.6% | 1.6 (1.1–2.3) | |||
Traditional method (Reference) | 43 | 26.9% | 200 | 36.4% | 1.00 | NSe | NSe | NSe |
Interaction (Contraceptive practice & Type of contraceptive (n = 378) | ||||||||
Early discontinuation & modern method | 37 | 39.8% | 60 | 21.0% | 1.4 (1.1–3.1) | |||
Late discontinuation & modern method | 34 | 36.6% | 76 | 26.7% | 1.7 (0.8–5.0) | |||
Ineffective use & traditional method (Reference) | 22 | 23.6% | 149 | 52.3% | - | - | - | 1.00 |
Secondary education | ||||||||
Not completed | 105 | 67.6% | 300 | 54.7% | 1.6 (1.1–2.3) | 1.6 (1.1–2.5) | 1.6 (1.1–2.4) | 1.7 (1.1–2.5) |
Completed (Reference) | 55 | 32.4% | 249 | 45.3% | 1.00 | 1.00 | 1.00 | 1.00 |
Currently employed | ||||||||
Yes | 64 | 40.0% | 140 | 25.5% | 1.9 (1.3–2.8) | 1.7 (1.1–2.5) | 1.8 (1.2–2.7) | 1.8 (1.2–2.7) |
No (Reference) | 96 | 60.0% | 409 | 74.5% | 1.00 | 1.00 | 1.00 | 1.00 |
Current marital status | ||||||||
Single/divorce/separate/widow | 29 | 18.1% | 10 | 1.8% | 11.9 (5.7–25) | 9.4 (4–21.9) | 9.3 (3.9–22.4) | 9.9 (4.1–24.3) |
Married (Reference) | 131 | 81.9% | 539 | 98.2% | 1.00 | 1.00 | 1.00 | 1.00 |
Fertility behaviour | ||||||||
No informed decision on family size | 79 | 49.4% | 145 | 26.4% | 2.3 (1.5–3.7) | 2.1 (1.3–3.4) | 1.9 (1.2–3.2) | 1.9 (1.1–3.1) |
Informed decision made: | ||||||||
Family completed | 40 | 25.0% | 224 | 40.8% | 0.8 (0.5–1.3) | 0.8 (0.5–1.4) | 0.9 (0.5–1.4) | 0.8 (0.5–1.4) |
Family not completed (Reference) | 41 | 25.6% | 180 | 32.8% | 1.00 | 1.00 | 1.00 | 1.00 |
Gravid statusd | ||||||||
Primigravid | 36 | 22.5% | 83 | 15.1% | 1.6 (1.1–2.5) | 2.5 (1.3–4.8) | 2.8 (1.1–5.6) | 2.1 (1.0–4.4) |
Non-primigravid (Reference) | 124 | 77.5% | 466 | 84.9% | 1.00 | 1.00 | 1.00 | 1.00 |
At least one female child present | ||||||||
No | 84 | 52.5% | 194 | 35.3% | 2.0 (1.4–2.9) | 2.2 (1.4–3.4) | 2.1 (1.3–3.3) | 2.1 (1.3–3.3) |
Yes (Reference) | 76 | 47.5% | 355 | 64.7% | 1.00 | 1.00 | 1.00 | 1.00 |