New indicators in evaluation of hemolysis, elevated liver enzymes, and low platelet syndrome: A case-control study

Table 1 Comparisons of demographic and clinical features among the three groups

	HELLP①	Controls②	PE③	H/z/χ2	P value
Age in yr	30 (27, 34)	29 (27, 33)	30 (27, 33)	1.3781	0.502
Parity > 1	90/210	94/210	88/210	0.3623	0.834
Assisted reproduction	43/210	33/210	48/210	3.5143	0.173
Multiple pregnancies	29/210	15/210	23/210	4.9443	0.084
GA at delivery in wk	33.6 (31, 36.3)	39.3 (38.9, 39.7)	36.4 (33.8, 38.2)	313.1021	0.000b
				①:②-305.8432	0.000d
				①:③-90.4942	0.000d
				②:③215.3792	0.000d
Neonatal birthweight in g	1800 (1200, 2350)	3350 (3100, 3650)	2500 (1889, 3050)	291.9171	0.000b
				①:③-297.0862	0.000d
				①:③95.0862	0.000d
				②:③202.0002	0.000d

¹Indicates Kruskal-Wallis test with ^aP < 0.05, ^bP < 0.01.

²Indicates Bonferroni test with ^cP < 0.05, ^dP < 0.01.

³Indicates Chi-square test of R × C contingency table with ^eP < 0.05, ^fP < 0.01.

GA: Gestational age (noted as the number of weeks, and days were converted to weeks by calculation and showed in decimal form); HELLP: Hemolysis, elevated liver enzymes, and low platelet syndrome; PE: Preeclampsia.