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Changes in disease stages from anatomic stage groups to prognostic stage groups (N=421)
| Anatomic stage groups | Change to | Prognostic stage groups | ||
| Stage | n | Stage | n | |
| IA | 213 | IB | 4 | |
| IA | 209 | |||
| IB | 3 | IA | 3 | |
| IIA | 103 | IB | 102 | |
| IIA | 1 | |||
| IIB | 52 | IB | 24 | |
| IIIB | 1 | |||
| IIB | 27 | |||
| IIIA | 33 | IIB | 11 | |
| IIA | 22 | |||
| IIIB | 2 | IIIA | 2 | |
| IIIC | 7 | IIIA | 2 | |
| IIIB | 4 | |||
| IIIC | 1 | |||
| IV | 8 | IV | 8 | |
