Table 3.
Factors associated with low birth weight in bivariate and multivariate logistic regression analyses
| Factor | ORa (95%CI) | AORb (95%CI) |
| Maternal age | ||
| 15–19 | 1.51 (1.22, 1.87) | - |
| 20–29 | 0.92 (0.78, 1.07) | |
| 30–39 | 0.68 (0.56, 0.83) | |
| 40–49 | 1 | |
| Marital status | ||
| Currently married/in union | 0.98 (0.78, 1.22) | - |
| Formerly married/in union | 1.10 (0.84, 1.45) | |
| Never married/in union | 1 | |
| Region | ||
| Northern | 1.06 (0.89, 1.27) | - |
| Central | 0.98 (0.86, 1.12) | |
| Southern | 1 | |
| Highest education level attained | ||
| None | 1.17 (0.98, 1.39) | 1.29 (1.07, 1.57) |
| Primary | 1.01 (0.88, 1.15) | 0.96 (0.84, 1.01) |
| Secondary or higher | 1 | 1 |
| Wealth index (quintiles) | ||
| 1 | 1.42 (1.20, 1.69) | 1.42 (1.19, 1.57) |
| 2 | 1.00 (0.83, 1.21) | 0.96 (0.79, 1.17) |
| 3 | 1.20 (1.00, 1.43) | 1.17 (0.98, 1.40) |
| 4 | 0.79 (0.65, 0.97) | 0.81 (0.66, 0.99) |
| 5 | 1 | 1 |
| Number of children ever born | ||
| 1 | 1.67 (1.45, 1.94) | 1.80 (1.54, 2.10) |
| 2 | 0.91 (0.76, 1.09) | 0.95 (0.79, 1.14) |
| 3–4 | 0.78 (0.66, 0.91) | 0.76 (0.64, 0.90) |
| 5+ | 1 | 1 |
| Number of times received antenatal care | ||
| 0–3 | 1.21 (1.00, 1.45) | 1 |
| 4–6 | 1.09 (0.91, 1.32) | |
| 7+ | 1 | |
a
Unadjusted Odds Ratio with 95% confidence interval
b
Adjusted Odds Ratio with 95% confidence interval Adjusted for the following factors in a backward variable selection procedure in logistic regression analysis: maternal age, marital status, region, education, wealth index, number of children ever born, and number of times received antenatal care.