Table 3.

Multivariate determinants of absolute density, absolute nondensity and relative density

Absolute dense
Absolute nondense
Relative dense
β* (95% confidence interval), cm2β*− (95% confidence interval), cm2β*− (95% confidence interval), %
BMI, kg/m210.08 (8.80 to 11.35)−2.12 (−1.55 to −2.59)
Age at examination, y−1.38 (−0.83 to −1.90)1.74 (0.74 to 2.73)−1.16 (−0.78 to −1.55)
Age at menarche, y1.55 (0.09 to 3.04)1.00 (−0.19 to 2.22)
Age at menopause, y0.84 (0.23 to 1.46)0.80 (0.30 to 1.30)
Parity (no. children)−2.94 (−1.80 to −4.05)3.81 (1.63 to 6.04)−2.49 (−1.55 to −3.32)
Adjusted R20.130.430.29
  • * Back-transformed β's from analyses based on square root–transformed measurements of density.