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Table 3 Association between age, body mass index, smoking, and bone mineral density:Results of multiple linear regression analysis

From: Bone mineral density, body mass index and cigarette smoking among Iranian women: implications for prevention

Determinant

LSBMD (g/cm2)a

FNBMD (g/cm2)a

Age (per 1 year)

-0.008 ± 0.002**

-0.007 ± 0.001**

BMI (-5 kg/m2)

0.006 ± 0.003*

0.005 ± 0.002**

Smoking (yes)

-0.087 ± 0.035*

-0.075 ± 0.025**

R2*

0.30

0.38

  1. *0.01 <p < 0.05; **0.0001 <p < 0.01
  2. a Values are regression coefficients ± SE describing the change in BMD (g/cm2) associated with one year advancing age, 5 kg/ m2 decrease in BMI and smoking status.
  3. BMI, body mass index; LSBMD, lumbar spine bone mineral density; FNBMD, femoral neck bone mineral density.
  4. * R2, coefficient of determination: a measure of the proportion of variation in BMD explained by the variation in the risk factors. The variables included in the initial regression analysis were: age, menopause status, BMI, smoking status, duration of smoking, cigarette dose, calcium intake, exercise, and alcohol use
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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