Length SD scores (SDS) at birth (or 25 weeks), 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)
| Length | SD scores (±95% CI) | ||||||||
| Male and female | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth (or 25 weeks) | −1.09 | −1.07 | −1.04 | −0.69 | −0.92 | −1.33 | −0.92 | −1.25 | −1.06 |
| 36 weeks | −1.70 | −1.10 | −1.87 | −1.40 | −1.30 | −1.52 | −1.32 | −1.81 | −1.87 |
| SDS change | −0.61 (−1.23 to 0.02) | −0.04 (−0.55 to 0.48) | −0.83 (−1.56 to −0.10) | −0.71 (−1.37 to −0.05) | −0.38 (−1.03 to 0.27) | −0.19 (−0.53 to 0.14) | −0.40 (−0.82 to 0.02) | −0.56 (−0.99 to −0.13) | −0.81 (−1.32 to −0.31) |
| Female | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth (or 25 weeks) | −1.09 | −1.35 | −1.00 | −0.51 | −0.73 | −1.34 | −0.46 | −1.63 | −0.98 |
| 36 weeks | −1.70 | −1.56 | −1.88 | −1.09 | −1.51 | −1.58 | −1.26 | −2.13 | −2.37 |
| SDS change | −0.61 (−1.23 to 0.02) | −0.22 (−1.04 to 0.61) | −0.88 (−1.14 to −0.62) | −0.57 (0.57 to 0.57) | −0.79 (−2.19 to 0.61) | −0.24 (−0.59 to 0.12) | −0.8 (−1.46 to −0.15) | −0.5 (−1.06 to 0.06) | −1.38 (−1.74 to −1.020) |
| Male | |||||||||
| GA (weeks) | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| Birth (or 25 weeks) | −0.64 | −1.08 | −0.73 | −0.99 | −1.32 | −1.05 | −0.78 | −1.15 | |
| 36 weeks | −0.42 | −1.87 | −1.48 | −1.21 | −1.47 | −1.34 | −1.42 | −1.28 | |
| SDS change | 0.23 (−0.05 to 0.50) | −0.78 (−2.22 to 0.65) | −0.75 (−1.80 to 0.31) | −0.22 (−0.87 to 0.44) | −0.15 (−0.67 to 0.38) | −0.29 (−0.79 to 0.20) | −0.64 (−1.24 to −0.03) | −0.12 (−0.64 to 0.40) | |
GA, gestational age.