Table 3(suite):
results of the univariable and multivariable analyses of correlates of fertility differentials in Burundi
| Univariable analysis | Multivariable analysis | |||
|---|---|---|---|---|
| uIRR (95% CI) | P Value | aIRR (95%CI) | P Value | |
| Women's religion | ||||
| No religion (RC) | 1 .000 | 1.000 | ||
| Catholic | 0.727 (0.663 - 0.797 | <0.001 | 0.976 (0.911 - 1.046) | 0.491 |
| Protestant | 0.773 (0.703 - 0.850) | <0.001 | 1.002 (0.935 - 1.075) | 0.951 |
| Adventist | 0.715 (0.629 - 0.813) | 0.002 | 0.953 (0.878 - 1.035) | 0.197 |
| Muslim | 0.840 (0.752 - 0.939) | <0.001 | 0.949 (0.876 - 1.028) | 0.251 |
| Others | 0.717 (0.612 - 0.841) | <0.001 | 0.925 (0.840 - 1.018) | 0.112 |
| Sex of the household head | ||||
| Male (RC) | 1.000 | 1.000 | ||
| Female | 0.772 (0.744 - 0.800) | <0.001 | 0.969 (0.946 - 0.992) | 0.009 |
| Exposure to FP Messages2 | ||||
| No (RC) | 1.000 | 1.000 | ||
| Yes | 0.967 (0.939 - 0.996) | 0.025 | 1.000 (0.983 - 1.018) | 0.994 |
| Infant mortality experience | ||||
| Yes (RC) | 1.000 | 1.000 | ||
| No | 0.457 (0.446 - 0.469) | <0.001 | 0.722 (0.710 - 0.734) | <0.001 |
| Age at first marriage | ||||
| ≤ 15 years (RC) | 1.000 | 1.000 | ||
| 16 - 19 years | 0.853 (0.828 - 0.879) | <0.001 | 0.967 (0.939 - 0.995) | 0.023 |
| ≥ 20 years | 0.675 (0.655 - 0.696) | <0.001 | 0.864 (0.837 - 0.891) | <0.001 |
| NA3 | 0.037 (0.033 - 0.042) | <0.001 | 1.000 (omitted) | |
| Age at first birth | ||||
| ≤ 15 years (RC) | 1.000 | 1.000 | ||
| 16 - 19 years | 0.872 (0.839 - 0.906) | <0.001 | 0.900 (0.867 - 0.934) | <0.001 |
| ≥ 20 years | 0.700 (0.674 - 0.727) | <0.001 | 0.812 (0.781 - 0.845) | <0.001 |
| NA4 | 0.000 (0.000 - 0.000) | <0.001 | 0.000 (0.000 - 0.000) | <0.001 |
| Knowledge of any Contraceptive methods | ||||
| Has knowledge (RC) | 1.000 | 1.000 | ||
| No knowledge | 1.736 (1.710 - 1.742) | <0.001 | 1.502 (1.494 - 1.564) | <0.001 |
| Modern contraceptive use | ||||
| Yes (RC) | 1.000 | 1.000 | ||
| No | 1.646 (1.640 - 1.684) | <0.001 | 1.583 (1.562 - 1.607) | <0.001 |
| Family size preference | ||||
| ≤ 3 children (RC) | 1.000 | 1.000 | ||
| ≥ 4 children | 1.196 (1.161- 1.231) | <0.001 | 1.059 (1.042 - 1.076) | <0.001 |
| No numeric response | 0.980 (0.868 - 1.106) | 0.738 | 1.090 (1.034 - 1.150) | 0.002 |
Note: uIRR: unadjusted incident rate ratio; aIRR: adjusted incident rate ratio; RC: reference category; 95% CI: 95% confidence interval; NA1, Exposure to FP Messages2, NA3 and NA4 have the same meanings as in Table 2, results adjusted for women's age and marital status