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Table 1 Influence of anthropometric, hormonal and lifestyle factors on BMDa at the spine and femoral neck.

From: Influence of arthritis and non-arthritis related factors on areal bone mineral density (BMDa) in women with longstanding inflammatory polyarthritis: a primary care based inception cohort

  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)
  1. 1adjusted for age.
  2. *p < 0.05