Associations of education and income with hazardous drinking among postpartum women in Japan: results from the TMM BirThree Cohort Study

Table 3 Associations between education and hazardous drinking 1 year after delivery according to income groups

	Hazardous drinking/participants	(%)	Age-adjusted	Multivariate-adjusted^a
	Hazardous drinking/participants	(%)	OR (95% CI)	OR (95% CI)
Educational attainment
Higher income group (n=4977)
University or higher	45/2082	(2.2)	1.00	1.00
College	58/1938	(3.0)	1.39 (0.94–2.07)	1.27 (0.85–1.90)
High school or lower	26/957	(2.7)	1.27 (0.78–2.07)	1.06 (0.64–1.75)
Lower income group (n=6054)
University or higher	17/1186	(1.4)	1.00	1.00
College	92/2325	(4.0)	2.84 (1.69–4.79)	2.54 (1.50–4.31)
High school or lower	159/2543	(6.3)	4.87 (2.94–8.09)	3.83 (2.29–6.40)

CI, confidence interval; OR, odds ratio
Interaction between income groups and educational attainment: p<0.001. Equivalent household income was dichotomized into higher (≥3.00 million Japanese yen) and lower (0–2.99 million Japanese yen) groups
^aAdjusted for age, parity, drinking status during pregnancy, work status, postpartum depression, and breastfeeding

ISSN: 1347-4715