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Table 1 Characteristics of the Karma study population

From: Common genetic variation and novel loci associated with volumetric mammographic density

  Karma-OncoArray
(n = 5827)
Karma-iCOGS
(n = 4021)
Age, years, mean (SD) 60.2 (9.2) 53.6 (9.4)
Body mass index, kg/m2, mean (SD) 25.5 (4.2) 25.3 (4.2)
Menopausal status, % (n)
 Premenopausal 22.8 (1327) 49.0 (1969)
 Postmenopausal 77.2 (4500) 51.0 (2052)
Percent dense volume (%), median (IQR) 6.7 (5.2) 8.4 (6.5)
Dense volume, cm3, median (IQR) 53.4 (31.1) 60.3 (36.9)
Nondense volume, cm3, median (IQR) 744 (616) 676 (581)
Family history of breast cancer, % (n) 13.7 (769) 12.0 (482)
  1. Karma Karolinska Mammography Project for Risk Prediction of. Breast Cancer
  2. Descriptive statistics of the Karma-OncoArray and Karma-iCOGS genotyping cohorts
  3. Abbreviations: SD standard deviation, IQR interquartile range