Table 1. Prevalent Vertebral Deformities by Vertebral Level, Among Participants in the Study of Women’s Health Across the Nation (SWAN) Vertebral Morphometry Study (N = 1446).
| Vertebral Level | Number of Vertebrae Evaluated | Number Evaluated as Percent of Maximum1 | Number of Grade 1 Deformities | Number of Grade 2 Deformities | Number of Grade 3 Deformities | Any Deformity2 | Percent of Total Deformities at Each Level3 |
|---|---|---|---|---|---|---|---|
| T4 | 620 | 43% | 0 | 0 | 0 | 0 | 0% |
| T5 | 778 | 54% | 2 | 1 | 0 | 3 | 6% |
| T6 | 914 | 63% | 2 | 0 | 1 | 3 | 6% |
| T7 | 1045 | 72% | 2 | 1 | 0 | 3 | 6% |
| T8 | 1211 | 84% | 3 | 0 | 0 | 3 | 6% |
| T9 | 1308 | 90% | 2 | 0 | 1 | 3 | 6% |
| T10 | 1368 | 95% | 1 | 0 | 0 | 1 | 2% |
| T11 | 1394 | 96% | 7 | 0 | 1 | 8 | 16% |
| T12 | 1417 | 98% | 6 | 4 | 0 | 10 | 20% |
| L1 | 1428 | 99% | 6 | 3 | 1 | 10 | 20% |
| L2 | 1424 | 98% | 1 | 3 | 1 | 5 | 10% |
| L3 | 1419 | 98% | 2 | 0 | 0 | 2 | 4% |
| L4 | 1386 | 96% | 0 | 0 | 0 | 0 | 0% |
| Deformities in All Levels (% of Total) | N/A | N/A | 34 (67%) | 12 (23%) | 5(10%) | 51(100%) | N/A |
1 Number evaluated as percent of maximum possible: (number of evaluable vertebrae at each level/1446)*100
2 46 individuals had at least one prevalent vertebral deformity. Of these, 3 had 2 deformities and 1 had 3 deformities, resulting in a total of 51 deformities among 46 women.
3 Percent of the total number deformities observed at each vertebral level: (number of deformities at level/51)*100