Table 1 Basic information of PPHN infants with ABO blood groups
Items | Blood type A (n = 24) | Blood type B (n = 20) | Blood type O (n = 39) | F/χ2 | P |
|---|---|---|---|---|---|
Sex: male/female | 15/9 | 13/7 | 28/11 | 0.658 | 0.720 |
Gestational age (weeks) | 36.4 ± 3.9 | 34.8 ± 4.9 | 35.9 ± 4.1 | 0.811 | 0.448 |
Birth weight (g) | 2925.0(1852.5–3300.0) | 2610.0(1612.5–3065.0) | 2800.0(2270.0–3200.0) | 1.221a | 0.543 |
5-min Apgar scores | 8.8 ± 2.1 | 8.6 ± 2.4 | 9.1 ± 1.6 | 0.405 | 0.669 |
PaO2 /FiO2 | 120.0(86.1–160.0) | 168.5(108.2–279.7) | 127.5(86.3–250.7) | 2.749a | 0.253 |