Table 3.
Semi-quantitative grade of prevalent vertebral fracture (T4-L4) independently assessed on CT lateral scout views, per vertebra and per person, by two readers at two time points, Framingham CT Study
| Reader A |
Reader B |
|||
|---|---|---|---|---|
| Time 1 N (%) |
Time 2 N (%) |
Time 1 N (%) |
Time 2 N (%) |
|
| Semi-quantitative fracture grade per vertebra, N=1,300 | ||||
| Grade 0 (normal) | 1,260 (97) | 1,248 (96) | 1,236 (95) | 1,234 (95) |
| Grade 1 (mild) | 25 (2) | 38 (3) | 41 (3) | 44 (3) |
| Grade 2 (moderate) | 15 (1) | 13 (1) | 15 (1) | 16 (1) |
| Grade 3 (severe) | 0 (-) | 1 (<1) | 8 (<1) | 6 (<1) |
| Total vertebrae grade ≥1 (mild-severe) | 40 (3) | 52 (4) | 64 (5) | 66 (5) |
| Semi-quantitative fracture grade per persona, N=100 | ||||
| Grade 0 (normal) | 76 | 77 | 65 | 65 |
| Grade 1 (mild) | 13 | 13 | 22 | 23 |
| Grade 2 (moderate) | 11 | 9 | 6 | 6 |
| Grade 3 (severe) | 0 | 1 | 7 | 6 |
| Total persons grade ≥ 1 (mild-severe) | 24 | 23 | 35 | 35 |
a
Individuals with more than one fracture are classified according to most severe fracture grade