Table 1.
Descriptive statistics of controlled variables
| Variable | Average | Median | Min | Max | Standard deviation |
|---|---|---|---|---|---|
| Age | 60.38 | 61.00 | 32.00 | 81.00 | 8.72 |
| Observation time (years) | 4.35 | 2.98 | 0.24 | 16.93 | 3.63 |
| Time free from cancer (years) | 3.44 | 2.26 | 0.00 | 16.44 | 3.60 |
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