Logistical regression modelling low birthweight outcomes
| OR | 95% CI | P value | |
| Ethnicity | 0.069 | ||
| Other | – | – | |
| Burmese | 0.89 | 0.82 to 0.98 | |
| Karen | 0.96 | 0.86 to 1.08 | |
| Mon | 0.93 | 0.69 to 1.23 | |
| Age (years) | <0.001 | ||
| 20–35 | – | – | |
| <20 | 1.27 | 1.13 to 1.42 | |
| >35 | 1.36 | 1.22 to 1.52 | |
| Gravida | 0.92 | 0.89 to 0.94 | <0.001 |
| Prior miscarriage | 0.55 | ||
| No | – | – | |
| Yes | 1.03 | 0.93 to 1.15 | |
| Family planning visit | <0.001 | ||
| No | – | – | |
| Yes | 0.82 | 0.73 to 0.92 | |
| Number of first trimester ANC visits | 0.86 | 0.81 to 0.91 | <0.001 |
| Number of second trimester ANC visits | 0.86 | 0.83 to 0.90 | <0.001 |
| Number of third trimester ANC visits | 0.97 | 0.94 to 1.00 | 0.087 |
Antenatal care access during the first trimester and second trimester emerged as independent protective factors against low birthweight delivery in the final model. Prior utilisation of family planning services was also correlated with lower odds of low birthweight delivery when adjusted for all other covariates. Pregnancy history as measured by maternal gravida displayed a protective effect against low birthweight delivery, while teenage pregnancy and advanced maternal age emerged as independent risk factors.
ANC, antenatal care.