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Distribution of 4-year PSA levels in primary cohort according to risk grouping.
| PSA Level, ng/mL | Favorable Risk | Intermediate Risk | High Risk | P Value |
|---|---|---|---|---|
| ≤0.2 | 2738 (75%) | 3383 (77%) | 578 (82%) | <0.00001 |
| >0.2 – ≤0.5 | 573 (16%) | 516 (12%) | 39 (6%) | <0.00001 |
| >0.5 – ≤1.0 | 194 (5%) | 232 (5%) | 29 (4%) | 0.000126 |
| >1.0 | 156 (4%) | 248 (6%) | 60 (9%) | <0.00001 |
