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Table 3 Relative contribution of age, body weight, testosterone, and estradiol levels to variation in bone mineral density at the femoral neck and lumbar spine

From: Quantification of the relative contribution of estrogen to bone mineral density in men and women

Predictor Men Women
Femoral neck BMD Lumbar spine BMD Femoral neck BMD Lumbar spine BMD
Age 0.331 0.035 0.279 0.194
(0.246 – 0.409) (0.01 – 0.09) (0.227 – 0.331) (0.155 – 0.239)
Weight 0.202 0.204 0.065 0.067
(0.125 – 0.276) (0.120 – 0.294) (0.036 – 0.114) (0.032 – 0.136)
Log (testosterone) 0.003 0.005 0.029 0.031
(0.001 – 0.044) (0.001 – 0.056) (0.1017 – 0.051) (0.017 – 0.054)
Log (estradiol) 0.025 0.012 0.113 0.117
(0.004 – 0.078) (0.001 – 0.058) (0.081 – 0.153) (0.085 – 0.159)
  1. Note: The data are shown in percentage and 95% confidence interval in brackets. For example, age accounted for 33.1% of the variation in femoral neck BMD in men. In the presence of age, weight, and testosterone, estradiol further accounted for 2.5% of the variation in femoral neck BMD.