Weight SD scores (SDS) at birth, 36 weeks postmenstrual age (PMA) and change in SDS (95% CI) from birth to 36 weeks PMA for all infants, female-only and male-only infants (only infants who were still inpatient at 36 weeks PMA and beyond are included in this analysis)
| Weight | SD scores (±95% CI) | ||||||||
| All infants | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth | 0.23 | 0.13 | −0.16 | 0.29 | −0.33 | −0.48 | −0.42 | −0.57 | −0.66 |
| 36 weeks | −0.79 | −0.42 | −0.29 | −0.10 | −0.60 | −0.63 | −0.59 | −0.84 | −0.78 |
| SDS change | −1.02 (−1.37 to −0.67) | −0.54 (−0.99 to −0.10) | −0.13 (−0.48 to 0.23) | −0.38 (−0.70 to −0.07) | −0.27 (−0.76 to 0.22) | −0.15 (−0.42 to 0.13) | −0.18 (−0.56 to 0.20) | −0.27 (−0.53 to −0.01) | −0.12 (−0.46 to 0.22) |
| Female | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth | 0.35 | −0.28 | −0.28 | 0.47 | −0.03 | −0.37 | −0.03 | −0.57 | −0.75 |
| 36 weeks | −0.73 | −0.15 | −0.23 | −0.28 | 0.39 | −0.76 | −0.42 | −0.85 | −1.16 |
| SDS change | −1.08 (−1.42 to −0.75) | 0.13 (−0.40 to 0.66) | 0.05 (−0.50 to 0.61) | −0.75 (−1.33 to −0.17) | 0.41 (−0.26 to 1.08) | −0.39 (−0.78 to 0.00) | −0.39 (−1.73 to 0.96) | −0.28 (−0.63 to 0.06) | −0.41 (−0.88 to 0.07) |
| Male | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth | 0.00 | 0.29 | −0.07 | 0.24 | −0.47 | −0.58 | −0.55 | −0.58 | −0.56 |
| 36 weeks | −0.89 | −0.53 | −0.32 | −0.06 | −0.84 | −0.50 | −0.65 | −0.82 | −0.35 |
| SDS change | −0.89 (−1.94 to 0.15) | −0.83 (−1.33 to −0.32) | −0.25 (−0.71 to 0.21) | −0.30 (−0.65 to 0.05) | −0.37 (−0.94 to 0.20) | 0.08 (−0.23 to 0.40) | −0.10 (−0.48 to 0.28) | −0.24 (−0.66 to 0.17) | 0.21 (−0.26 to 0.67) |
GA, gestational age.