Table 2.
Whole Sample | Gestational Age ≤ 28 Weeks | Gestational Age > 28 Weeks | |||||||
---|---|---|---|---|---|---|---|---|---|
Mean ± SD | Group 1 (n = 99) | Group 2 (n = 128) | p | Group 1 (n = 26) | Group 2 (n = 42) | p | Group 1 (n = 73) | Group 2 (n = 85) | p |
Age at minimum weight (days) | 3.8 ± 1.6 | 3.9 ± 1.5 | 0.612 | 3.9 ± 1.8 | 4.2 ± 1.7 | 0.517 | 3.8 ± 1.6 | 3.8 ± 1.4 | 0.982 |
% weight loss | 11.4 ± 5.1 | 9.2 ± 8.6 | 0.026 | 13.8 ± 6.0 | 7.8 ± 5.5 | <0.001 | 10.6 ± 4.5 | 10.0 ± 9.8 | 0.617 |
Age at recovery of birth weight (days) | 11.1 ± 4.1 | 1.4 ± 5.1 | 0.287 | 11.5 ± 5.6 | 10.8 ± 6.9 | 0.663 | 11.0 ± 3.4 | 10.3 ± 3.9 | 0.230 |
Fall in weight z-score from | |||||||||
birth to 28 dol | −1.18 ± 0.41 | −0.96 ± 0.66 | 0.003 | −1.33 ± 0.59 | −0.91 ± 0.94 | 0.055 | −1.13 ± 0.32 | −0.98 ± 0.46 | 0.023 |
birth to 36 weeks PMA | −1.69 ± 0.79 | −1.64 ± 0.70 | 0.652 | −2.31 ± 0.95 | −2.04 ± 0.76 | 0.217 | −1.43 ± 0.53 | −1.38 ± 0.51 | 0.588 |
birth to discharge | −1.42 ± 0.77 | −1.42 ± 0.79 | 0.951 | −1.96 ± 1.04 | −1.86 ± 0.99 | 0.692 | −1.23 ± 0.55 | −1.21 ± 0.56 | 0.793 |
dol: Days of life, PMA: Postmenstrual age.