Table 5 Enrollment characteristics of LBW and NBW study participants
NBW | LBW | p-value | ||||
|---|---|---|---|---|---|---|
N = 210 | N = 500 | |||||
N | % | N | % | |||
Gestational age [mean (SD)] | 39.3 (1.5) | 35.1 (3.7) | < 0.001 | |||
Gestational age categories | Extremely preterm (≤28 weeks) | 0 | 23 | 4.6 | < 0.001 | |
Preterm (29–31 weeks) | 0 | 59 | 11.8 | |||
Moderate prematurity (32–33 weeks) | 2 | 1.0 | 85 | 17.0 | ||
Late preterm (34–36 weeks) | 14 | 6.7 | 167 | 33.4 | ||
Full term (≥37 weeks) | 194 | 92.4 | 166 | 33.2 | ||
Gender | Female | 89 | 42.4 | 292 | 58.4 | < 0.001 |
Male | 121 | 57.6 | 208 | 41.6 | ||
Birthweights [mean (SD)] | 3081.4 (407.2) | 1867.1 (460.1) | < 0.001 | |||
Birthweight [median IQR] | 2970 (1720–4400) | 1990 (1185–3800) | ||||
Birthweight categories | < 1000 g | 0 | 24 | 4.9 | < 0.001 | |
1000–1499 g | 0 | 79 | 16.1 | |||
1500–1999 g | 0 | 166 | 33.9 | |||
2000–2999 g | 0 | 221 | 45.1 | |||
≥2500 g | 205 | 100 | 0 | |||
Low Apgar at 5 or 10 min | 38 | 18.5 | 146 | 29.7 | 0.002 | |
Twin | 16 | 7.6 | 87 | 17.4 | 0.001 | |
Hospitalisation after birth | 110 | 52.4 | 390 | 78.0 | < 0.001 | |
Dropout within 24 months | Death | 13 | 15.7 | 137 | 46.6 | < 0.001 |
Lost to follow up | 70 | 84.3 | 157 | 53.4 | ||