Table 4.

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

	ABCD study				KiGGS study
	(%)	Abstainer	Non-daily drinker	Daily drinker	(%)	Abstainer	Non-abstainer
		N = 3049	N = 1894	N = 295		N = 14089	N = 2012
SGA
Non-smoker	7.8	1.00	1.17 (0.91, 1.50)	0.76 (0.41, 1.39)	8.1	1.00	1.06 (0.85, 1.33)
Smoker	16.6	1.00	1.00 (0.56, 1.77)	0.77 (0.31, 1.91)	16.6	1.00	0.80 (0.56, 1.14)
PTB
Non-smoker	4.6	1.00	0.75 (0.55, 1.03)	0.16 (0.04, 0.64)	6.1	1.00	0.80 (0.60, 1.08)
Smoker	6.5	1.00	1.00 (0.42, 2.42)	0.85 (0.22, 3.34)	6.9	1.00	0.56 (0.26, 1.19)

Full Model: adjusted for education, 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;