Table 1

Selected characteristics of subjects

Low density (n = 46)High density (n = 46)
Median age48.549.0
 Interquartile range(45–55)(45–55)
Radiological classification (No. of subjects)
 0% density70
 >0–<10% density240
 10–25% density140
 25–50% density01
 50–75% density07
 >75% density038
 Missing10
Histological classification (No. of subjects)
 Normal101
 Stromal fibrosis45
 Nonproliferative, fibrocystic change2317
 Proliferative FCCa without atypia821
 Proliferative FCC with atypia01
 Not assessed/missing1 (fibroadenoma)1 (missing)
  • a FCC, fibrocystic change.