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Table 4 Caucasian females: Dependence of fat fraction on age for three BMI ranges.

From: Physiological models of body composition and human obesity

BMI Range Ave age (SD) Age range Ave BMI Ave Fat Fraction N
17 – 22 24.83 (3.36) 18 – 30 19.97 (1.37) 0.196 (.045) 41
  38.04 (5.87) 30 – 49 20.60 (1.07) 0.220 (.058) (p < .05) 42
  62.98 (11.26) 49 – 89 20.55 (1.01) 0.278 (.053) (p < .01) 41
22 – 25.9 25.71 (4.46) 18 – 33 23.38 (1.14) 0.24 (.053) 41
  39.56 (5.14) 33 – 51 23.54 (1.09) 0.28 (.057) (p < .01) 41
  67.75 (10.61) 52 – 88 24.17 (1.17) 0.34 (.061) (p < .01) 40
26 – 56 34.72 (7.50) 21 – 45 32.26 (7.19) 0.39 (.076) 36
  53.75 (4.87) 45 – 61 32.06 (6.16) .42 (.060) (NS) 36
  70.49 (6.87) 62 – 90 29.36 (2.68) 0.40 (.055) (NS) 35
  1. The p values are for comparisons to the closest younger age group