Table 4.

The impact of ABO blood type on neonatal outcomes in Rh-negative pregnant women

Neonatal outcomes	Type O (n = 44)	Type A (n = 24)	Type B (n = 24)	Type AB (n = 8)	P
LOHS	3.0 (2.0, 4.0)	3.0 (2.0, 3.5)	4.0 (2.0, 4.0)	2.5 (2.0, 4.5)	0.238
FD, n (%)	1 (2.3)	0 (0.0)	2 (8.3)	0 (0.0)	0.480
NH, n (%)	19 (43.2)	6 (25.0)	10 (41.7)	4 (50.0)	0.413
PB, n (%)	5 (11.4)	0 (0.0)	0 (0.0)	1 (12.5)	0.096
LBW, n (%)	8 (18.2)	0 (0.0)	2 (8.3)	1 (12.5)	0.116
NA, n (%)	2 (4.5)	0 (0.0)	0 (0.0)	0 (0.0)	0.570

LOHS was evaluated using the Kruskal–Wallis H test, while other comparisons were conducted using either the chi-square test or Fisher's exact test

NH neonatal hyperbilirubinemia, FD fetal distress, LOHS Length of hospital stay, PB premature birth, LBW Low birth weight, NA Neonatal asphyxia