Table 3.

Comparison of adverse pregnancy outcomes across the three groups based on ISSHP categories

	C-1	C-2	C-3	C-1 vs. C-3	C-2 vs. C-3	C-1 vs. C-3		C-2 vs. C-3
	(n = 42)	(n = 28)	(n = 34)	P value	P value	OR	95% CI	OR	95% CI
Acidosis	3(7.1%)	2(7.1%)	9 (26.5%)	<  0.05	<  0.05	4.68	1.15–18.98	4.68	0.92–23.83
Apgar score (5 min) < 7	2 (4.8%)	0 (0%)	6 (17.6%)	n.s.	–	4.29	0.81–22.80	–	–
Stillbirth	0	0	1 (2.9%)	–	–	–	–	–	–
Neonatal mortality	0	0	1 (2.9%)	–	–	–	–	–	–
Composite adverse pregnancy outcomes	5 (11.9%)	2 (7.1%)	12 (35.5%)	<  0.05	<  0.005	4.04	1.25–12.99	7.09	1.43–35.16

Abbreviations: C-1, classification 1; C-2, classification 2; C-3, classification 3; OR, odds ratio; CI, confidence interval; n.s., not significant; ISSHP, International Society for the Study of Hypertension in Pregnancy

Acidosis is defined as umbilical artery pH < 7.20. The composite adverse pregnancy outcomes include acidosis, Apgar score < 7 at 5 min, stillbirth, and neonatal mortality

Data are presented as n (%), or OR with 95% CI

P-values < 0.05 were considered statistically significant