Table 4 Risk of incident osteoporosis for longitudinal cohort in different BMI groups (n = 24,507).

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

BMI groups

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

Multivariable model, HR (95% CI)

p value

Underweight (BMI < 18.5)

61/662 (9.2)

1.63 (1.26 to 2.12)

 < 0.001

Normal weight (18.5 ≤ BMI < 24)

881/12,321 (7.2)

1.00 (reference)

–

Overweight (24 ≤ BMI < 27)

401/6941 (5.8)

0.73 (0.65 to 0.83)

 < 0.001

Obese (BMI ≥ 27)

213/4583 (4.6)

0.61 (0.52 to 0.71)

 < 0.001

  1. BMI: body mass index; HR: hazard ratio; CI: confidence interval. Multivariable model: adjustment for age, sex, history of hypertension, history of diabetes mellitus, history of dyslipidemia, serum albumin, fasting glucose, and total cholesterol.
  2. Unit of BMI = kg/m2.
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