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Table 3 Associations between alcohol consumption and breast cancer by HER2 status

From: Alcohol and breast cancer tumor subtypes in a Spanish Cohort

Alcohol intake

Controls

HER2 negative  N ORa (95 % CI)

HER2 positive N ORa (95 % CI)

Abstainers

389

421 1.0

92 1.0

Light/Moderate drinkers (1–7 drinks/week)

293

343 1.03 (0.83, 1.28)

81 1.13 (0.81, 1.59)

Heavy drinkersb (>7 drinks/week)

65

160 2.12 (1.53, 2.94) P < 0.001

29 1.77 (1.08, 2.92) P = 0.052

  1. aPolytomous regression analysis. Adjusted for age at diagnosis, age at menarche, parity, breastfeeding, oral contraceptive use, menopausal status, BMI, smoking status, and family history
  2. bStudy subjects who consumed 1 to 7 drinks/week were considered light/moderate drinkers, and those who consumed > 7drinks/week were considered heavy drinkers
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