Table 1.
Influence of anthropometric, hormonal and lifestyle factors on BMDa at the spine and femoral neck.
| Femoral Neck (g/cm2) | Lumbar Spine (g/cm2) | |
|---|---|---|
| β1 coefficient | β1 coefficient | |
| Height (per 10 cm) | -0.014 (-0.047, 0.019) | 0.001 (-0.040, 0.042) |
| Weight (per 10 kg) | 0.030 (0.004, 0.056)* | 0.034 (0.002, 0.066)* |
| BMI (kg/m2) | 0.008 (0.002, 0.014)* | 0.008 (0.001, 0.016)* |
| Menarche (years) | -0.017 (-0.032, -0.002)* | -0.018 (-0.036, -0.001)* |
| Age at natural menopause (years) | 0.001 (-0.004, 0.005) | 0.005 (-0.001, 0.010) |
| Oral contraceptive pill use: yes vs no | 0.005 (-0.051, 0.060) | -0.002 (-0.069, 0.065) |
| Hormone replacement therapy: yes vs no | 0.027 (-0.023, 0.077) | 0.036 (-0.027, 0.100) |
| Walking or cycling: >= 1/2 hr vs < 1/2 hr | 0.040 (-0.005, 0.085) | -0.005 (-0.059, 0.050) |
| Activity aged 15-25 yrs: heavy/very heavy vs light/moderate | 0.036 (-0.008, 0.080) | 0.031 (-0.021, 0.084) |
| Activity aged 25-50 yrs: heavy/very heavy vs light/moderate | 0.021 (-0.026, 0.068) | 0.001 (-0.057, 0.058) |
| Activity aged 50 yrs and over: heavy/very heavy vs light/moderate | -0.023 (-0.078, 0.033) | -0.055 (-0.122, 0.012) |
| Ever smoked: yes vs no | 0.023 (-0.021, 0.066) | -0.008 (-0.059, 0.042) |
| Alcohol: >= 1 dy/wk vs < 1 dy/wk | 0.032 (-0.019, 0.083) | -0.001 (-0.062, 0.061) |
1adjusted for age.
*p < 0.05