Table 3.

GDM risk score during the first trimester

	β	OR (95% CI)	p	Score		β	OR (95% CI)	p	Score
Maternal height (cm)					Educational background
≥ 166	–	1	0.032	0	University or above	–	1	< 0.01	0
162–165	0.185	1.20 (0.83–1.75)	0.334	2	Junior college	0.654	1.92 (1.37–2.70)	< 0.01	7
159–161	0.446	1.56 (1.05–2.32)	0.028	4	Technical secondary and high school	1.018	2.77 (1.55–4.96)	< 0.01	10
≤ 158	0.538	1.71 (1.14–2.58)	0.010	5	Junior secondary and below	1.375	3.96 (1.50–10.46)	< 0.01	14
Pre-pregnancy BMI (kg/m2)					Family history of diabetes
< 18.5	– 0.079	0.92 (0.57–1.51)	0.753	– 1	No	–	1	–	0
18.5–23.9	–	1	0.028	0	Yes	1.534	4.64 (2.54–8.46)	< 0.01	15
24.0–27.9	0.441	1.55 (1.10–2.20)	0.013	4	Menstrual disorders
≥ 28.0	0.585	1.79 (0.97–3.34)	0.064	6	No	–	1	–	0
FBG during first trimester					Yes	0.930	2.54 (1.19–5.40)	0.016	9
≤ 4.09	–	1	< 0.01	0	History of hypertension
4.10–4.37	0.055	1.06 (0.67–1.67)	0.815	1	No	–	1	–	0
4.38–4.59	0.493	1.64 (1.03–2.61)	0.038	5	Yes	1.002	2.72 (1.49–4.99)	0.001	10
4.60–4.79	0.750	2.12 (1.34–3.35)	< 0.01	8	History of cesarean delivery
4.80–5.09	0.919	2.51 (1.61–3.92)	< 0.01	9	No	–	1	–	0
5.10–7.00	1.641	5.16 (3.21–8.29)	< 0.01	16	Yes	0.437	1.55 (0.99–2.43)	0.058	4
Maternal age (year)					History of GDM
19–29	–	1	0.186	0	No	–	1	–	0
30–34	0.336	1.40 (1.04–1.89)	0.027	3	Yes	1.178	3.25 (0.31–33.88)	0.325	12
35–39	0.221	1.25 (0.85–1.84)	0.264	2	History of PCOS
40–44	0.573	1.77 (0.70–4.51)	0.228	6	No	–	1	–	0
≥ 45	1.013	2.76 (0.22–34.62)	0.433	10	Yes	0.931	2.54 (0.43–15.11)	0.306	9

BMI body mass index, PCOS polycystic ovary syndrome, IVF-ET in vitro fertilization and embryo transfer