Table 4.
Bivariable and multivariable weibull accelerated failure time (AFT) model analysis for predictors of time to first childbirth in Ethiopia [EDHS 2019 (n = 8,885)].
| Variable | Categories | Coef. | Acceleration factor (ϕ) | 95% CI for ϕ | p-value |
|---|---|---|---|---|---|
| Residence | Urban | 1 | 1 | 1 | 1 |
| Rural | −0.0097 | 0.990 | (0.953, 1.029) | 0.618 | |
| Mother educational level | No education | 1 | 1 | 1 | 1 |
| Primary | 0.0358 | 1.036 | (1.011, 1.063) | 0.006 | |
| Secondary and above | 0.1432 | 1.154 | (1.118, 1.191) | 0.000 | |
| Wealth index | Poor | 1 | 1 | 1 | 1 |
| Middle | −0.0161 | 0.984 | (0.957, 1.012) | 0.264 | |
| Rich | −0.0231 | 0.977 | (0.948, 1.007) | 0.136 | |
| Sex of household head | Male | 1 | 1 | 1 | 1 |
| Female | 0.0209 | 1.021 | (0.992, 1.051) | 0.153 | |
| Knowledge of any contraceptive method | Knows no method | 1 | 1 | 1 | 1 |
| knows at least one method | 0.0509 | 1.052 | (1.006, 1.101) | 0.028 | |
| Media exposure (television) | No | 1 | 1 | 1 | 1 |
| Yes | 0.0467 | 1.048 | (1.011, 1.086) | 0.011 | |
| Media exposure (radio) | No | 1 | 1 | 1 | 1 |
| Yes | −0.0152 | 0.985 | (0.957, 1.013) | 0.295 |
Bold value indicates variables having a p-value of ≤0.05.