Table 1.
Clinical characteristics of the 51 infants.
| Characteristics | Infants in PWML group (n = 23) | Infants in control group (n = 28) | Z/χ2 | Significance (P-value) |
|---|---|---|---|---|
| No. of males (%) | 14 (60.87) | 23 (82.14) | −10.37 | 0.001* |
| Birth weight (g) | 2,200 (860, 1,125–3,200) | 1,880 (1,645, 1,140–5,250) | 0.09 | 0.932 |
| Gestational age at birth (weeks) | 34.00 (2.43, 28.43–41.14) | 34.43 (6.43, 26.89–41.29) | −0.43 | 0.670 |
| PMA at MRI scan (weeks) | 35.14 (3.29, 32.57–41.71) | 35.71 (5.36, 29.57–45.43) | −0.86 | 0.389 |
| Ya (%) | 95.00 (0.00, 92.00–98.00) | 95.00 (2.00, 90.00–99.00) | 0.26 | 0.793 |
| HCT (%) | 45.60 (22.00, 29.80–65.10) | 37.85 (11.95, 25.00–52.80) | 1.97 | 0.049* |
| No. of low birth weight (<1,500 g) (%) | 6 (26.09) | 3 (10.71) | 21.35 | <0.001* |
Characteristics values are reported as frequency (percentage, the total range) or median (interquartile range, the total range) across subjects. P-values are based on chi-square test and Wilcoxon two-sample exact tests. Ya, arterial oxygen saturation; HCT, hematocrit; PMA, Postmenstrual age.
*
P < 0.05.