Table 3.
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 | |
| Place of residence | ||||
| Rural (RC) | 1.000 | 1.000 | ||
| Urban | 0.678 (0.631 - 0.730) | <0.001 | 0.769 (0.739 - 0.782) | 0.008 |
| Health regions | ||||
| Bujumbura Mairie (RC) | 1.000 | 1.000 | ||
| North | 1.652 (1.472 - 1.854) | <0.001 | 1.018 (0.970 - 1.067) | 0.469 |
| Central-East | 1.530 (1.362 - 1.719) | <0.001 | 1.062 (1.012 - 1.114) | 0.014 |
| West | 1.717 (1.524 - 1.933) | <0.001 | 1.094 (1.042 - 1.148) | <0.001 |
| South | 1.607 (1.428 - 1.809) | <0.001 | 1.129 (1.077 - 1.184) | <0.001 |
| Marital status | ||||
| Single (RC) | 1.000 | 1.000 | ||
| Married/living together | 21.689 (19.189 - 24.515) | <0.001 | 2.124 (1.60 - 2.815) | <0.001 |
| Divorced/separated | 17.008 (15.008 - 19.275) | <0.001 | 1.659 (1.537 - 1.791) | <0.001 |
| Widowed | 20.389 (17.940 - 23.173) | <0.001 | 1.852 (1.715 - 2.000) | <0.001 |
| Women's education | ||||
| Illiterate (RC) | 1.000 | 1.000 | ||
| Primary | 0.739 (0.718 - 0.760) | <0.001 | 0.940 (0.924 - 0.956) | <0.001 |
| Secondary | 0.303 (0.235 - 0.392) | <0.001 | 0.767 (0.735 - 0.801) | <0.001 |
| Higher | 0.264 (0.243 - 0.286) | <0.001 | 0.718 (0.643 - 0.802) | <0.001 |
| Husband's education | ||||
| Illiterate (RC) | 1.000 | 1.000 | ||
| Primary | 0.896 (0.876 - 0.916) | <0.001 | 0.948 (0.931 - 0.965) | <0.001 |
| Secondary | 0.699 (0.671 - 0.727) | <0.001 | 0.876 (0.842 - 0.911) | <0.001 |
| Higher | 0.550 (0.503 - 0.600) | <0.001 | 0.729 (0.711 - 0.763) | <0.001 |
| Don't know/NA1 | 0.276 (0.260 - 0.293) | <0.001 | 0.968 (0.748 - 1.254) | 0.807 |
| Women's occupation | ||||
| Modern (RC) | 1.000 | 1.000 | ||
| Agricultural | 1.173 (1.107 - 1.243) | <0.001 | 1.521(1.429 - 1.568) | <0.001 |
| Unemployed | 0.514 (0.450 - 0.587) | <0.001 | 0.970 (0.929 - 1.013) | 0.172 |
| Others/don't know | 0.319 (0.237 - 0.429) | <0.001 | 1.022 (0.951 - 1.098) | 0.553 |
| Husband's occupation | ||||
| Modern (RC) | 1.000 | 1.000 | ||
| Agricultural | 1.192 (1.155 - 1.231) | <0.001 | 1.294 (1.211 - 1.316) | <0.001 |
| Unemployed | 1.168 (1.104 - 1.237) | <0.001 | 0.992 (0.944 - 1.042) | 0.742 |
| Others/don't know/NA1 | 0.372 (0.351 - 0.396) | <0.001 | 1.026 (0.961 - 1.096) | 0.435 |
| Wealth index | ||||
| Richest (RC) | 1.000 | 1.000 | ||
| Richer | 1.329 (1.257 - 1.406) | <0.001 | 1.011 (0.987 - 1.035) | 0.376 |
| Middle | 1.287(1.217 - 1.360) | <0.001 | 1.054 (1.032 - 1.077) | <0.001 |
| Poorer | 1.316 (1.244 - 1.393) | <0.001 | 1.094 (1.067 - 1.121) | <0.001 |
| Poorest | 1.404 (1.330 - 1.482) | <0.001 | 1.117 (1.080 - 1.155) | <0.001 |
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