BMC Pregnancy and Childbirth

Table 1 Clinical characteristics of the subjects

From: Association of vitamin D receptor gene polymorphisms with gestational diabetes mellitus-a case control study in Wuhan, China

	GDM(n = 826)	Non-GDM (n = 858)	P
Age ^a (year)	30.99 ± 4.57	28.85 ± 4.23	< 0.01
Height (cm)	159.78 ± 4.71	159.52 ± 6.07	0.37
Pre-pregnancy BMI (kg/m²)	22.23 ± 3.74	20.89 ± 6.60	< 0.01
Family history of diabetes	246(29.90)	102(12.10)	< 0.01
Gravidity			0.05
1	289(35.90)	338(40.10)
2	232(28.90)	254(30.10)
≥ 3	283(35.20)	251(29.80)
Parity			0.29
Multiparous	340(41.30)	332(38.70)
previous history of GDM	47(5.69)	4(0.47)	< 0.01
Age of menarche ^b (year)	13.40 ± 1.40	13.34 ± 1.31	0.34

Data were given as the mean ± SD or as n (%), with the significance of differences between groups evaluated using t-test or χ² test
^aAge refers to the age at which the participant was enrolled in the study
^bAge of menarche refers to the age at which the first menstruation took place
Abbreviations: BMI body mass index; GDM gestational diabetes mellitus; SD standard deviation
Bold represents significant P

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ISSN: 1471-2393

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