Table 2.
Prevalence and correlates of LBW among sample mother–infant pairs.
| Variables | LBW | Univariate | Multivariate | ||
|---|---|---|---|---|---|
| (%, n/N) | OR (95% CI) | P | aOR (95% CI) | P | |
| Age(years) | |||||
| <35 | 8.8 (319/3611) | 1 | |||
| ⩾35 | 7.7 (55/709) | 0.87 (0.64–1.17) | 0.352 | ||
| Race | |||||
| Han | 3.4 (6/177) | 1 | |||
| Yi | 8.8 (363/4116) | 2.75 (1.21–6.26) | 0.016 | ||
| Other | 0 (0/6) | Null | |||
| Urban | |||||
| Yes | 6.5 (18/276) | 1 | 1 | ||
| No | 9.0 (284/3153) | 1.42 (0.87–2.32) | 0.165 | 2.44 (1.06–5.66) | 0.036 |
| Delivery hospital | |||||
| People's hospital | 9.6 (240/2507) | 1 | |||
| MCH | 6.6 (42/634) | 0.67 (0.48–0.94) | 0.021 | ||
| HIV status | |||||
| Negative | 8.3 (342/4131) | 1 | 1 | ||
| Positive | 15.6 (33/211) | 2.05 (1.39–3.03) | 0.0003 | 1.93 (1.27–2.94) | 0.002 |
| Syphilis | |||||
| Negative | 8.9 (276/3098) | 1 | |||
| Positive | 16.9 (12/71) | 2.08 (1.11–3.92) | 0.023 | ||
| Gravidity | |||||
| 1 | 10.3 (178/1733) | 1 | 1 | ||
| >1 | 7.5 (192/2574) | 0.70 (0.57–0.87) | 0.001 | 0.73 (0.59–0.92) | 0.007 |
| Parity | |||||
| None | 11.5 (83/722) | 1 | |||
| ⩾1 | 8.0 (288/3587) | 0.67 (0.52–0.87) | 0.003 | ||
| Mode of delivery | |||||
| Vaginal delivery | 9.0 (298/3321) | 1 | |||
| C-section (with medical indication) | 7.8 (75/962) | 0.86 (0.66–1.12) | 0.255 | ||
| C-section (without medical indication) | 0 (0/51) | <0.001 (<0.001–>999.99) | 0.968 | ||
| PTD | |||||
| <34 weeks | 37.4 (83/222) | 8.31 (6.16–11.20) | 7.60 (5.62–10.29) | <0.0001 | |
| 34–36 weeks | 55.6 (15/27) | 17.37 (8.05–37.48) | <0.0001 | 15.04 (7.11–31.83) | <0.0001 |
| ⩾37 weeks | 6.7 (272/4056) | 1 | 1 | ||
Bold values are p<0.05.
Numbers not adding up due to missing; MCH, Maternal and Child Health Care Hospital.