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Table 2 Association between history of infertility and mammographic density

From: Association of infertility and fertility treatment with mammographic density in a large screening-based cohort of women: a cross-sectional study

   Age adjusted Fully adjustedb
  N MD (95 % CI) MD (95 % CI)
Absolute dense volume, cm3    
 No infertility 34,360 0.00 (Reference) 0.00 (Reference)
 History of infertilitya 8953 3.12 (2.22 to 4.02) 1.53 (0.70 to 2.35)
Absolute non-dense volume, cm3    
 No infertility 34,360 0.0 (Reference) 0.0 (Reference)
 History of infertilitya 8953 13.8 (4.9 to 22.8) 7.6 (1.8 to 13.4)
Percent dense volume, pp    
 No infertility 34,360 0.00 (Reference) 0.00 (Reference)
 History of infertilitya 8953 0.19 (0.04 to 0.35) 0.09 (−0.06 to 0.23)
  1. Abbreviations: BMI body mass index, CI confidence interval, MD mean difference (difference in mean density between exposed group and reference group), pp percentage points
  2. aAll women who reported ever trying to conceive for at least 1 year without success
  3. bAdjusted for age at mammography, BMI, age at menarche, cigarette smoking, alcohol consumption, education level, family history of breast cancer, parity and menopausal status