Definitions used by the taskforce to identify studies that included individuals at high risk of osteoporotic fracture
| Osteopenia | T score ≤−1.0 to −2.5 SD |
| Osteoporosis | T score ≤−2.5 SD |
| FRAX 10-year probability of a major* osteoporotic fracture | ≥20% (age independent) |
| FRAX 10-year probability of hip fracture | ≥3% (age independent) |
| FRAX NOGG threshold | 40–90 years (age dependent) |
T score, unit of SD from the mean for bone mineral density compared with a healthyyoung adult.
FRAX intervention thresholds vary between countries.
*A clinical spine, hip, forearm or humerus fracture.
FRAX, Fracture Risk Assessment Tool; NOGG, National Osteoporosis Guideline Group.