Association between late pregnancy A/G ratio and the risk of neonatal admission for neonatal hyperbilirubinemia

Table 3 Multivariate logistic regression analysis of late pregnancy A/G ratio and risk of admission for NHB in different ages

Subgroup		n	n/N (%)	Crude Model OR (95% CI)	P	Adjusted Model OR (95% CI)	P	P for interaction
< 30y								0.329
	G2	349	53 (15.2)	1(Ref)		1(Ref)
	G1	28	5 (17.9)	1.21 (0.44–3.33)	0.707	1.18 (0.39–3.60)	0.771
	G3	292	56 (19.2)	1.33 (0.88–2.00)	0.181	1.54 (0.98–2.43)	0.063
≥ 30y
	G2	384	44 (11.5)	1(Ref)		1(Ref)
	G1	65	16 (24.6)	2.52 (1.32–4.81)	0.005	2.77 (1.37–5.62)	0.005
	G3	314	51 (16.2)	1.50 (0.97–2.31)	0.068	1.83 (1.14–2.93)	0.012
< 30y								0.822
	A/G < 1.29	197	32 (16.2)	0.91 (0.51–1.62)	0.760	0.89 (0.40–2.02)	0.788
	A/G ≥ 1.29	472	82 (17.4)	1.18 (0.98–1.41)	0.077	1.20 (0.98–1.46)	0.075
≥ 30y
	A/G < 1.29	253	36 (14.2)	0.67 (0.46–0.98)	0.041	0.52 (0.31–0.87)	0.013
	A/G ≥ 1.29	510	75 (14.7)	1.12 (0.93–1.34)	0.234	1.18 (0.97–1.44)	0.096

Adjusted covariates are the same as in Table 2, Model III
The A/G ratio was analyzed as a continuous variable, with effect sizes expressed per 0.1-unit increase. The A/G ratio was categorized into two groups with cut-off points at 1.29 and three groups (G1, G2, and G3) with cut-off points at 1.15 and 1.40. G1: A/G < 1.15; G2: 1.15 ≤ A/G ≤ 1.40; G3: A/G > 1.40

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