Table 3.
Logistic regression of associated factors to Method Failure / Discontinuation
| Indicator Variable | Method Failure | Discontinuation | ||||||
|---|---|---|---|---|---|---|---|---|
| Age Category | Odds ratio | P-value | 95%-CI | Odds ratio | P-value | 95%-CI | ||
| RC (15–19) | ||||||||
| 20–24 | 0.54 | 0.19 | 0.22 | 1.35 | 1.89 | 0.00 | 1.23 | 2.92 |
| 25–29 | 0.96 | 0.93 | 0.39 | 2.39 | 2.44 | 0.00 | 1.55 | 3.84 |
| 30–34 | 0.71 | 0.48 | 0.27 | 1.88 | 1.67 | 0.03 | 1.05 | 2.67 |
| 35–39 | 0.69 | 0.48 | 0.24 | 1.94 | 1.59 | 0.06 | 0.97 | 2.61 |
| 40–44 | 0.29 | 0.05 | 0.08 | 1.00 | 1.65 | 0.08 | 0.93 | 2.92 |
| 45–49 | 0.11 | 0.05 | 0.01 | 1.02 | 1.72 | 0.18 | 0.76 | 3.87 |
| Religion | ||||||||
| RC (Catholic) | ||||||||
| Anglican/Methodist/Presbyterian | 1.70 | 0.23 | 0.71 | 4.09 | 1.05 | 0.84 | 0.64 | 1.72 |
| Pentecostal | 1.42 | 0.36 | 0.66 | 3.06 | 1.33 | 0.16 | 0.89 | 2.00 |
| Other Christian | 1.55 | 0.32 | 0.65 | 3.69 | 0.75 | 0.21 | 0.49 | 1.18 |
| Muslim | 1.08 | 0.83 | 0.50 | 2.34 | 1.48 | 0.05 | 0.99 | 2.22 |
| Other/No religion | 0.86 | 0.86 | 0.15 | 5.01 | 1.33 | 0.50 | 0.58 | 3.03 |
| Education | ||||||||
| RC (No Education) | ||||||||
| Primary | 0.71 | 0.16 | 0.44 | 1.15 | 1.08 | 0.55 | 0.84 | 1.38 |
| Secondary or higher | 0.44 | 0.00 | 0.24 | 0.80 | 1.18 | 0.28 | 0.88 | 1.61 |
| Household wealth index | ||||||||
| RC (Poorest) | ||||||||
| Poorer | 1.61 | 0.24 | 0.72 | 3.60 | 0.45 | 0.00 | 0.31 | 0.65 |
| Medium | 2.00 | 0.05 | 1.00 | 4.03 | 0.66 | 0.02 | 0.46 | 0.94 |
| Richer | 1.72 | 0.15 | 0.82 | 3.60 | 0.69 | 0.04 | 0.48 | 0.99 |
| Richest | 3.32 | 0.00 | 1.36 | 8.10 | 0.51 | 0.01 | 0.30 | 0.88 |
| Marital Status | ||||||||
| RC (Single) | ||||||||
| Currently in union with a partner | 2.18 | 0.00 | 1.40 | 3.40 | 0.45 | 0.00 | 0.34 | 0.58 |
| Formerly in union with a partner | 0.94 | 0.88 | 0.41 | 2.17 | 1.95 | 0.02 | 1.10 | 3.46 |
| Contraceptive method | ||||||||
| RC (Condom) | ||||||||
| Rhythm | 5.63 | 0.00 | 2.88 | 11.00 | 0.65 | 0.00 | 0.47 | 0.88 |
| Emergency Contraception# | . | . | ||||||
| Withdrawal | 3.71 | 0.00 | 1.84 | 7.47 | 1.43 | 0.04 | 1.01 | 2.02 |
| Injection | 1.12 | 0.80 | 0.43 | 2.93 | 0.58 | 0.00 | 0.41 | 0.83 |
| Pill | 2.85 | 0.00 | 1.30 | 6.28 | 0.90 | 0.59 | 0.62 | 1.31 |
| Implant | 0.39 | 0.24 | 0.08 | 1.92 | 0.19 | 0.00 | 0.13 | 0.28 |
| Knowledge of number of FP methods | 1.10 | 0.17 | 0.96 | 1.27 | 1.03 | 0.46 | 0.95 | 1.10 |
| Constant | 0.00 | 0.00 | 0.00 | 0.03 | 3.85 | 0.00 | 1.71 | 8.65 |
| Number of obs. = 2378; Wald Chi2(25) = 115.3; Prob > Chi2 = 0.00; Pseudo R2 = 0.12; Log pseudolikelihood = − 625.7 | Number of obs. = 3043; Wald Chi2(25) = 288.75; Prob > Chi2 = 0.00; Pseudo R2 = 0.10; Log pseudolikelihood = − 1428.6 | |||||||
#_Emergency contraceptive was dropped from the regression analysis because it is meant for emergency situations and expected to be discontinued after use