Table 2 Univariable and multivariable binary logistic analyses for the prevalence of osteoporosis in different BMI groups (n = 119,009).

From: The association between body mass index and osteoporosis in a Taiwanese population: a cross-sectional and longitudinal study

BMI groups

No. of prevalent osteoporosis cases/no. of subjects (%)

Unadjusted odds ratio (95% CI)

p value

Adjusted odds ratio (95% CI)

p value

Underweight (BMI < 18.5)

556/3946 (14.1)

1.64 (1.49 to 1.80)

 < 0.001

2.20 (1.99 to 2.43)

 < 0.001

Normal weight (18.5 ≤ BMI < 24)

5332/58,683 (9.1)

1.00 (reference)

–

1.00 (reference)

–

Overweight (24 ≤ BMI < 27)

2600/32,190 (8.1)

0.88 (0.84 to 0.92)

 < 0.001

0.74 (0.71 to 0.78)

 < 0.001

Obese (BMI ≥ 27)

1620/24,190 (6.7)

0.72 (0.68 to 0.76)

 < 0.001

0.69 (0.65 to 0.74)

 < 0.001

  1. CI: confidence interval. Multivariable model: adjustment for age, sex, smoking, drinking, history of hypertension, history of diabetes mellitus, history of dyslipidemia, serum albumin, fasting glucose, total cholesterol, triglyceride, and estimated glomerular filtration rate.
  2. Unit of BMI = kg/m2.
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