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Table 1 Patient characteristics.

From: Discordant effect of body mass index on bone mineral density and speed of sound

  Overweight (n = 22) Lean (n = 11)
Age (year) 59.1 ± 9.4* 58.5 ± 7.8
BMIa (kg/m2) 30.9 ± 2.7 19.6 ± 1.2**
Years since menopause 11.3 ± 9.9 8.0 ± 6.6
Physical activity (times/week) 1.1 ± 2.3 1.8 ± 2.9
Calcium intake (mg/day) 700 ± 230 725 ± 167
  1. *Mean ± SD, **P < 0.0001, aBMI = Body mass index.