. Author manuscript; available in PMC: 2020 Aug 22.

Published in final edited form as: Paediatr Perinat Epidemiol. 2012 Mar 7;26(3):208–217. doi: 10.1111/j.1365-3016.2012.01266.x

Table 2.

Odds ratios for the association between quartile of A1C at diagnosis of GDM and LGA and macrosomia among women with GDM (n = 502)

Outcome	A1C quartile	n	n (%)^a	UOR [95% CI]	P^b	AOR^c [95% CI]	P^b
LGA	First	148	4 (3)	1.00 Reference	0.06	1.00 Reference	0.12
	Second	109	3 (3)	1.02 [0.22, 4.66]		1.03 [0.23, 4.51]
	Third	144	7 (5)	1.84 [0.53, 6.43]		2.11 [0.59, 7.59]
	Fourth	101	8 (8)	3.10 [0.91, 10.59]		3.60 [0.73, 17.83]
Macrosomia	First	148	8 (6)	1.00 Reference	0.23	1.00 Reference	0.20
	Second	109	4 (4)	0.67 [0.20, 2.28]		0.71 [0.21, 2.40]
	Third	144	5 (4)	0.63 [0.20, 1.97]		0.77 [0.26, 2.32]
	Fourth	101	11 (11)	2.14 [0.83, 5.53]		2.68 [0.73, 9.88]

n (%) with outcome.

P for trend.

Adjusted for: maternal age at GDM diagnosis, parity (0, ≥1), clinic, non-White race/ethnicity, pre-pregnancy body mass index (kg/m²) and gestation at first A1C.

A1C, haemoglobin A1c; GDM, gestational diabetes mellitus; LGA, large for gestational age; UOR, unadjusted odds ratio; CI, confidence interval; AOR, adjusted odds ratio.