Table 4.
Effect of gestational anaemia on adverse birth outcomes: logistic regression
| aOR | 95 % CI | P-value | aOR | 95 % CI | P-value | |
|---|---|---|---|---|---|---|
| LBW | ||||||
| Maternal age | 0·97 | 0·93, 1·02 | 0·21 | 0·96 | 0·90, 1·03 | 0·24 |
| Preterm birth | 22·70 | 13·54, 38·06 | <0·001 | 39·98 | 20·09, 79·58 | <0·001 |
| Living in the urban area | 0·65 | 0·40, 1·06 | 0·08 | 0·39 | 0·19, 0·83 | 0·015 |
| Female gender | 1·44 | 0·94, 2·22 | 0·09 | 1·35 | 0·75, 2·59 | 0·37 |
| Belonging to the lowest SES | 1·23 | 0·48, 3·11 | 0·67 | 2·24 | 0·41, 12·30 | 0·35 |
| Prenatal care visits | 0·87 | 0·80, 0·94 | 0·001 | 0·80 | 0·71, 0·91 | 0·001 |
| Gestational anaemia | 0·48 | 0·28, 0·82 | 0·007 | 0·40 | 0·20, 0·83 | 0·014 |
| SGA* | ||||||
| Maternal age | 0·92 | 0·89, 0·96 | <0·001 | 0·91 | 0·86, 0·95 | <0·001 |
| Living in the urban area | 1·26 | 0·62, 2·48 | 0·51 | 0·57 | 0·36, 0·89 | 0·01 |
| Belonging to the lowest SES | 0·92 | 0·89, 0·96 | <0·001 | 0·75 | 0·32, 1·76 | 0·50 |
| Gestational anaemia | 0·56 | 0·38, 0·83 | 0·003 | 0·52 | 0·33, 0·80 | <0·001 |
aOR, adjusted OR; LBW, low birth weight; SES, socio-economic stratification; SGA, small for gestational age.
*
All models included potential confounders as covariates (maternal age, SES and neonate sex), except for SGA because INTERGROWTH21 calculates sex-adjusted centiles.