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Table 4 Other risk factors by study groupa

From: Risk factors for breast cancer in postmenopausal Caucasian and Chinese-Canadian women

  Adjusted Mean (Lower and Upper 95% Confidence Limits) (% Yes)     
     P
  Caucasians Chinese born in the West or migrated to the West before 21 Recent Chinese migrants P b P c P d P e
  (N = 413) (N = 216) (N = 421)     
First degree relatives with breast cancerf 16.0 (12.0, 21.1) 14.7 (10.0, 21.0) 7.8 (5.5, 11.0) 0.87 0.99 0.003 0.04
Any benign breast biopsy 14.8 (11.5, 18.9) 8.7 (5.5, 8.2) 5.4 (3.5, 8.2) 0.04 0.10 <0.001 0.39
Consumption of alcohol at least once per week for six months or longer 60.6 (53.5, 67.2) 9.4 (6.0, 14.4) 2.3 (1.2, 4.2) <0.001 <0.001 <0.001 <0.001
Consumption of alcohol at least once per week currently 50.9 (45.7, 56.0) 8.7 (5.6, 13.4) 1.4 (0.6, 3.3) <0.001 <0.001 <0.001 <0.001
Smoked at least one cigarette per day for three months or longer 46.5 (39.1, 54.1) 12.4 (8.2, 18.2) 1.7 (0.8, 3.6) <0.001 <0.001 <0.001 <0.001
Smoking at least one cigarette per day 11.0 (8.2, 14.6) 3.3 (1.5, 6.7) 0.5 (0.1, 1.9) 0.01 0.006 <0.001 0.05
Currently        
Any X-ray examinations that included the chest areag 73.7 (67.4, 79.1) 78.5 (71.1, 84.4) 97.4 (95.3, 98.5) 0.20 0.69 <0.001 <0.001
Any X-ray examination for tuberculosisg 58.3 (51.6, 64.7) 71.9 (64.3, 78.4) 96.4 (94.2, 97.9) 0.09 0.008 <0.001 <0.001
  1. a P values were based on logistic regression, adjusting for age, education, and age × ethnicity. Pairwise comparisons were adjusted for multiple comparisons using the Bonferroni method. Variables are expressed as adjusted means.
  2. b P values for ethnicity effect
  3. c P values for comparing Caucasians and Chinese born in the West or migrated to the West before age 21
  4. d P values for comparing Caucasians and recent Chinese migrants
  5. e P values for comparing Chinese born in the West or migrated to the West before age 21 and recent Chinese migrants
  6. f There were 22 missing values for Caucasians, 21 for Chinese born in the West or migrated to the West before age 21, and 38 for recent Chinese migrants.
  7. g There were seven missing values for Caucasians and six for Chinese born in the West or migrated to the West before age 21.
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