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Table 2 Multiple linear regression for mammographic density and current alcohol intake, New York City Multiethnic Breast Cancer Project (n = 180); 2007-2008

From: The association of alcohol consumption with mammographic density in a multiethnic urban population

  Model 1a Model 2b
  β 95% CI P β 95% CI P
Percent density       
Current alcohol intake       
   Nondrinkers 0 reference   0 reference  
   ≤7 servings/week 0.54 −2.75, 3.84 0.75 −0.46 −3.69, 2.78 0.78
   >7 servings/week 8.95 2.89, 15.00 <0.01 8.22 1.81, 14.64 0.01
Dense area       
Current alcohol intake       
Nondrinkers 0 reference   0 reference  
   ≤7 servings/week 0.56 −3.68, 4.79 0.80 −0.10 −4.38, 4.18 0.96
   >7 servings/week 8.30 0.52, 16.08 0.04 5.75 −2.73, 14.24 0.18
Non-dense area       
Current alcohol intake       
   Nondrinkers 0 reference   0 reference  
   ≤7 servings/week −0.44 −27.15, 26.28 0.97 11.82 −8.81, 32.44 0.26
   >7 servings/week −19.65 −68.77, 29.46 0.43 −2.33 −43.21, 38.56 0.91
  1. Abbreviations: CI, Confidence interval.
  2. aModel 1 is adjusted for age at interview (years).
  3. bModel 2 is adjusted for age at interview, BMI (continuous, kg/m2), hormone contraceptive use (ever use vs never use), family history of breast cancer (yes or no), menopausal status (pre- or post-), current smoking status, nativity (US or foreign-born), race/ethnicity, age at first birth centered at the mean, and parity.