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Table 4 Associations between income and hazardous drinking 1 year after delivery according to education groups

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

 

Hazardous drinking/participants

(%)

Age-adjusted

Multivariate-adjusteda

 

OR (95% CI)

OR (95% CI)

Equivalent household income

    

 Higher education group (n=7531)

    

  ≥4.00 million JPY

73/2449

(3.0)

1.00

1.00

  3.00–3.99 million JPY

30/1571

(1.9)

0.67 (0.44–1.04)

0.79 (0.50–1.23)

  2.00–2.99 million JPY

71/2278

(3.1)

1.13 (0.81–1.57)

1.08 (0.76–1.53)

  ≤1.99 million JPY

38/1233

(3.1)

1.12 (0.75–1.67)

0.99 (0.64–1.53)

 Lower education group (n=3500)

    

  ≥4.00 million JPY

10/460

(2.2)

1.00

1.00

  3.00–3.99 million JPY

16/497

(3.2)

1.53 (0.69–3.41)

1.59 (0.70–3.59)

  2.00–2.99 million JPY

72/1236

(5.8)

2.85 (1.46–5.59)

2.60 (1.31–5.16)

  ≤1.99 million JPY

87/1307

(6.7)

3.32 (1.70–6.46)

2.45 (1.23–4.86)

  1. CI, confidence interval; JPY, Japanese yen; OR, odds ratio
  2. Interaction between education groups and equivalent household income: p=0.0085. Educational attainment was dichotomized into higher (college or higher) and lower (high school or lower) groups
  3. aAdjusted for age, parity, drinking status during pregnancy, work status, postpartum depression, and breastfeeding