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Table 2 Associations between alcohol consumption and breast cancer by tumor subtype

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

Alcohol intake Controls Luminal A Luminal B TNBC HER2 overexpressing
N N ORa (95 % CI) N ORa (95 % CI) N ORa (95 % CI) N ORa (95 % CI)
Abstainers 389 359 1.0 59 1.0 62 1.0 31 1.0
Light/Moderate drinkers (1–7 drinks/week) 293 291 1.03 (0.82, 1.28) 62 1.37 (0.92, 2.03) 50 1.05 (0.70, 1.58) 19 0.78 (0.43, 1.41)
Heavy drinkersb (>7drinks/week) 65 141 2.16 (1.55, 3.02) P < 0.001 20 1.98 (1.11, 3.53) P = 0.019 19 1.93 (1.07, 3.47) P = 0.091 9 1.51 (0.68, 3.36) P = 0.730
  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 1–7 drinks/week were considered light/moderate drinkers, and those who consumed >7drinks/week were considered heavy drinkers