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Table 3 Regression analysis with total hip BMD as dependent variable

From: Low bone mineral density following gastric bypass is not explained by lifestyle and lack of exercise

Variable

Univariate

Multivariate

Coefficient

Standard error

p-value

Coefficient

Standard error

p-value

Age at present

− 0.004

0.001

0.006

− 0.001

0.002

0.412

Years since surgery

− 0.0076

0.000

0.001

− 0.003

0.000

0.026

BMI

0.000

0.002

0.738

   

BMI at 20 years of age

0.000

0.002

0.705

   

Calcium intake

0.0000

0.000

0.915

   

Activity at present (min/week)

− 0.0000

0.000

0.844

   

Activity 5 years ago (min/week)

0.0000

0.000

0.711