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Characteristics of the S-RT–alone cases
| Age (years) | Range: 49–82 |
| Median: 67 | |
| Mean: 66 | |
| PSA nadir after RP (ng/ml) | Range: <0.0–0.191 |
| Median: 0.0135 | |
| Mean: 0.032 | |
| PSA at initiation of S-RT (ng/ml) | Range: 0.02–3.63 |
| Median: 0.292 | |
| Mean: 0.402 | |
| Period between RP and initiation of S-RT (months) | Range: 3.8–80.5 |
| Median: 18.6 | |
| Mean: 24 |
PSA = prostate-specific antigen, RP = radical prostatectomy, S-RT = salvage radiotherapy.
