Table 3. Results of Multivariable analysis of time-to-contraceptive after childbirth by women aged 15–49 who had their most recent birth within 12 months preceding the survey, West Gojjam Zone, Ethiopia, June 2018.
| Hazard Ratio (95% CI) | ||||
|---|---|---|---|---|
| Variables | Unadjusted HR | 95% CI | aHR | 95% CI |
| Residence | ||||
| Rural | 1.00 | --------- | 1.00 | …… |
| Urban | 1.77 | (1.46, 2.15) | 0.98 | (0.74, 1.32) |
| Age of women | 0.95 | (0.94, 0.97) | 0.99 | (0.97, 1.02) |
| Educational status of women | ||||
| No education | 1.00 | -------- | 1.00 | ----- |
| Primary education | 1.95 | (1.66, 2.30) | 1.298 | (1.02, 1.66)** |
| At least secondary | 3.37 | (2.75, 4.12) | 1.344 | (0.98, 1.84) |
| Family size | 0.88 | (0.84, 0.91) | 0.99 | (0.91, 1.09) |
| Wealth status | ||||
| Poor | 1.00 | --- | 1.00 | --- |
| Medium | 1.03 | (0.85, 1.25) | 0.96 | (0.73, 1.25) |
| Rich | 0.99 | (0.84, 1.18) | 1.06 | (0.85, 1.32) |
| Population per PHC | ||||
| >25,000population | 1.00 | -------- | 1.00 | ---- |
| < = 25,000 population | 1.01 | (0.71, 1.44) | 1.42 | (0.94, 2.12) |
| Attended 4+ANC visits | ||||
| No | 1.00 | ______ | 1.00 | ______ |
| Yes | 2.48 | (2.13, 2.88) | 1.59 | (1.22, 2.06)** |
| Timing of the first ANC | ||||
| Third trimester | 1.00 | ------- | 1.00 | ------ |
| Second trimester | 1.67 | (1.30, 2.15) | 1.43 | (0.97, 2.12) |
| First trimester | 4.49 | (3.32, 6.08) | 2.03 | (1.28, 3.21)** |
| Mode of delivery | ||||
| Non SVD (c/s, instrumental) | 1.00 | ----- | 1.00 | --- |
| SVD | 0.79 | (0.63, 0.99) | 0.81 | (0.62, 1.04) |
| Early PNC care (within 2–3 days after birth) | ||||
| No | 1.00 | ---- | 1.00 | --- |
| Yes | 3.31 | (2.78, 3.96) | 1.39 | (1.12,1.73)** |
| θ value (theta) | 0.06 | |||
| τ (tau Kendall) | 0.03 | |||
| Log-likelihood(LL) | -603 | |||
** Significant at 0.05level of significance, HR = Hazard Ratio, aHR = Adjusted Hazard Ratio; CI = Confidence Interval; C/S = Caesarian Section; SVD = Spontaneous Vaginal Delivery
LRT = Likelihood ratio test of theta (θ) = 0 at chi-squares with 0 and 1 degrees of freedom; Kendall’s tau (τ) = θ/ θ+2, where τ = ϵ (0, 1). 95% Confidence interval