Possible risk factors of osteoporosis at the spine L2–4. Occurrence and logistic regression analysis
| Occurrence (%) | Logistic regression analysis | |||||||
|---|---|---|---|---|---|---|---|---|
| T⩽−2.5 (n=66) | T>−2.5 (n=327) | p Value | β | SE | OR | CI | ||
| Age ⩾60 | 77.3 | 33.9 | <0.001 | 1.87 | 0.36 | 6.46 | 3.18 to 13.13 | |
| BMI3-150 2 lowest quartiles | 62.1 | 47.7 | 0.04 | 1.26 | 0.35 | 3.52 | 1.77 to 6.99 | |
| Deformed joints | 54.8 | 35.6 | 0.006 | 0.50 | 0.33 | 1.65 | 0.87 to 3.14 | |
| MHAQ3-150⩾1.5 | 59.0 | 50.2 | 0.21 | −0.26 | 0.36 | 0.77 | 0.38 to 1.56 | |
| DAS3-150 2 highest quartiles | 65.5 | 47.9 | 0.02 | 0.27 | 0.36 | 1.31 | 0.64 to 2.67 | |
| Current use of corticosteroids | 66.1 | 35.3 | <0.001 | 1.07 | 0.34 | 2.91 | 1.50 to 5.65 | |
| Non-vertebral fracture | 33.9 | 18.6 | 0.007 | 0.50 | 0.36 | 1.65 | 0.82 to 3.32 | |
| Constant | −4.32 | 0.51 | ||||||
| Sensitivity/specificity (%) | 52/87 | |||||||
↵3-150 BMI = body mass index; MHAQ = Modified Health Assessment Questionnaire; DAS = disease activity score.