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Test of equality of survival distributions for the different levels of variables
| Variable | Chi-Square | df | p-value |
|---|---|---|---|
| Sex | 3.761 | 1 | .052 |
| Age | 14.302 | 1 | .000 |
| Level of surgery | 2.867 | 2 | .238 |
| KPS | .783 | 2 | .676 |
| Different levels of four groups | 2.551 | 3 | .466 |
| Different levels of two groups | 2.029 | 1 | .154 |
