Table 1.

Characteristics of the samples under study

Time since pregnancy
Nulliparous0-2 y5-10 y
Patient age (mean ± SD), y29.1 ± 6.827.2 ± 6.430.8 ± 5.9
Time since pregnancy (mean ± SD), yN/A1.2 ± 0.57.4 ± 1.3
Sample numbers
    Total201715
    Reduction mammoplasty7912
    Benign biopsy1383