Table 3.

Odds ratios (95% CI) from the full model of SGA and PTB and maternal alcohol intake during pregnancy, categorized by maternal education level

	ABCD study				KiGGS study
	(%)	Abstainer	Non-daily drinker	Daily drinker	(%)	Abstainer	Non-abstainer
		N = 3049	N = 1894	N = 295		N = 14089	N = 2012
SGA
Mid-high education	7.7	1.00	1.18 (0.92, 1.51)	0.84 (0.50, 1.41)	9.0	1.00	1.08 (1.06, 1.09)
Low education	13.7	1.00	0.96 (0.53, 1.74)	0.28 (0.04, 2.13)	11.4	1.00	0.72 (0.48, 1.08)
PTB
Mid-high education	4.5	1.00	0.79 (0.58, 1.07)	0.37 (0.15, 0.92)	5.3	1.00	0.77 (0.57, 1.03)
Low education	5.9	1.00	0.84 (0.35, 1.01)	---	6.4	1.00	0.57 (0.26, 1.24)

Full Model: adjusted for smoking during pregnancy, maternal height, parity, BMI, maternal age, ethnicity, maternal distress (in ABCD study only) and hypertension (in ABCD study only).

For all analyses on SGA, parity was excluded, because SGA is corrected for parity by definition.

CI = confidence interval; SGA = small for gestational age; PTB = preterm birth;