Frequency of occurrence for the different risk factors in the four stratification groups
| Frequency (%) | ||||
|---|---|---|---|---|
| Factor | LBW (n=83) | FA (n=111) | LBW and FA (n=31) | Controls (n=176) |
| *p<0.05, **p<0.01, ***p<0.001, compared with controls. | ||||
| †Data available for only 85 infants. | ||||
| ‡Data available for only 110 infants. | ||||
| §Compared with two doses, only in Chikwawa District Hospital. | ||||
| LBW, Low birth weight; FA, fetal anaemia. | ||||
| Sex (boys) | 50.6 | 45.0 | 56.7 | 51.7 |
| Prematurity | 45.8*** | 10.0 | 67.7*** | 13.1 |
| Intrauterine growth retardation | 61.4* | 12.7 | 45.2** | 17.6 |
| Maternal anaemia at recruitment | 37.3*** | 24.8 | 21.4 | 24.7 |
| Maternal anaemia at delivery | 20.7*** | 16.7*** | 20.0* | 6.3 |
| Maternal malaria at recruitment | 24.7 | 16.3 | 34.5 | 22.0 |
| Maternal malaria at delivery | 28.9 | 30.6 | 30.0 | 25.3 |
| Placental malaria | 22.9 | 22.5 | 35.5* | 17.8 |
| Parity (primipara) | 42.2* | 15.3* | 46.7* | 27.8 |
| HIV mother | 24.7 | 27.1 | 33.3 | 27.2 |
| High placental parasite density† | 5.3 | 16.7 | 9.1 | 6.5 |
| High delivery parasite density‡ | 0 | 6.1 | 0 | 2.3 |
| One dose of sulfadoxine/pyrimethamine§ | 57.9 | 44.3 | 75 | 43.8 |