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Table 1 Characteristics of mothers and daughters

From: A comparison of breast density measures between mothers and adolescent daughters

   Mothers Daughters
N   101 113
Age (years)   47.7 ± 4.8 13.9 ± 1.7
Weight (kg)   70.8 ± 17.0 54.1 ± 14.3
Height (cm)   160.3 ± 7.3 157.4 ± 8.4
BMI (kg/m2)   27.5 ± 6.0 NA
BMI Z-score   NA 0.41 ± 1.02
% total body fatb   39.7 ± 7.8 30.1 ± 9.1
Age at menarche (years)c   12.5 ± 1.6 11.7 ± 1.1
Number of children   2.5 ± 1.0 ---
Ethnicity, primary (N) Caucasian 32 35
  Asian 46 41
  Other 23 37
Ethnic backgrounds reported, all or parta Caucasian 49 77
  Asian 64 83
  Other 33 53
Tanner stage for breast development (N) 1-2   17
  3   38
  4-5   58
  1. aAll reported ethnic backgrounds; therefore, total exceeds the number of subjects.
  2. bN = 100 for mothers with DXA % total body fat.
  3. cN = 80 who had reached menarche.