Table 2. Distribution of scores for the two screening tools and BMD (T-score) by age and BMI groups.
| Characteristic | OSTA | OSTC | T-score | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Lumbar vertebra L1 | Lumbar vertebra L2 | Lumbar vertebra L3 | Lumbar vertebra L4 | Lumbar vertebrae (L1–L4) |
Left femoral neck | Right femoral neck | |||
| Overall | -2.3 ± 2.5 | -25.7 ± 18.9 | -2.3 ± 1.0 | -2.4 ± 1.2 | -2.5 ± 1.3 | -2.2 ± 1.4 | -2.4 ± 1.2 | -1.9 ± 1.0 | -1.2 ± 1.0 |
| Age (year) | |||||||||
| < 55 | 0.0 ± 1.5 | -1.9 ± 8.0 | -1.6 ± 0.9 | -1.8 ± 1.0 | -1.8 ± 1.2 | -1.5 ± 1.5 | -1.7 ± 1.1 | -1.3 ± 0.9 | -0.5 ± 0.8 |
| 55–59 | -0.7 ± 1.4 | -10.6 ± 7.7 | -2.1 ± 1.0 | -2.1 ± 1.2 | -2.2 ± 1.3 | -1.9 ± 1.3 | -2.1 ± 1.1 | -1.3 ± 0.9 | -0.6 ± 0.9 |
| 60–64 | -1.7 ± 2.2 | -20.3 ± 11.2 | -2.3 ± 1.0 | -2.3 ± 1.1 | -2.4 ± 1.2 | -2.1 ± 1.2 | -2.3 ± 1.0 | -1.9 ± 0.8 | -1.1 ± 0.8 |
| 65–69 | -3.1 ± 1.5 | -32.4 ± 7.8 | -2.5 ± 1.0 | -2.6 ± 1.1 | -2.8 ± 1.3 | -2.4 ± 1.4 | -2.6 ± 1.1 | -2.1 ± 1.0 | -1.3 ± 0.9 |
| 70–74 | -4.0 ± 2.4 | -41.3 ± 12.4 | -2.7 ± 0.9 | -2.7 ± 1.2 | -3.0 ± 1.4 | -2.6 ± 1.4 | -2.8 ± 1.1 | -2.5 ± 0.8 | -1.7 ± 0.9 |
| ≥ 75 | -5.8 ± 1.9 | -57.9 ± 10.9 | -2.7 ± 1.0 | -2.9 ± 1.2 | -3.1 ± 1.4 | -2.6 ± 1.5 | -2.8 ± 1.2 | -2.8 ± 0.9 | -2.1 ± 0.9 |
| BMI (kg/m2) | |||||||||
| < 18.5 | -5.5 ± 2.0 | -44.0 ± 18.1 | -3.1 ± 0.8 | -3.3 ± 1.2 | -3.7 ± 1.4 | -3.5 ± 1.4 | -3.4 ± 1.1 | -2.8 ± 0.8 | -2.1 ± 0.9 |
| 18.5–22.9 | -3.0 ± 2.0 | -28.7 ± 16.9 | -2.5 ± 1.0 | -2.5 ± 1.1 | -2.7 ± 1.2 | -2.3 ± 1.2 | -2.5 ± 1.1 | -2.0 ± 0.9 | -1.3 ± 0.9 |
| 23.0–24.9 | -1.8 ± 1.9 | -22.2 ± 16.7 | -2.2 ± 1.0 | -2.2 ± 1.1 | -2.3 ± 1.3 | -2.0 ± 1.3 | -2.2 ± 1.1 | -1.8 ± 1.0 | -1.0 ± 1.0 |
| ≥ 25 | -0.9 ± 2.2 | -19.7 ± 18.4 | -2.0 ± 1.0 | -2.0 ± 1.2 | -2.1 ± 1.3 | -1.7 ± 1.5 | -1.9 ± 1.2 | -1.7 ± 1.1 | -0.9 ± 1.0 |
BMI: Body mass index; OSTA: Osteoporosis self-assessment tool for Asians; OSTC: Osteoporosis screening tool for Chinese.
Data presented as mean ± SD.