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Electron microscopy class on the basis of the Ehrenreich and Churg classification
| Ehrenreich and Churg Classification | EXT1/EXT2-Negative, n=252 (67.4%) | EXT1/EXT2-Positive, n=122 (32.6%) | P Valuea |
|---|---|---|---|
| 1 | 9 (3.6%) | 8 (6.6%) | 0.19 |
| 2 | 72 (28.6%) | 58 (47.5%) | <0.001 |
| 3 | 167 (66.3%) | 56 (45.9%) | <0.001 |
| 4 | 3 (1.2%) | 0 (0.0%) | 0.23 |
P<0.05 is considered significant.
