| Stage 0 | Stage I | Stage II | Stage III | ||||
OLGA | OLGIM | OLGA | OLGIM | OLGA | OLGIM | OLGA | OLGIM | |
Number of cases | 183 | 191 | 93 | 78 | 20 | 21 | 2 | 8 |
Average age (years) | 51.07 | 51.04 | 50.36 | 49.69 | 50.95 | 51.90 | 51.50 | 54.50 |