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Comparison of survival time between two groups (cases (%)).
| Group | 1-year follow-up | 2-year follow-up | 3-year follow-up | |||
|---|---|---|---|---|---|---|
| Survival | Death | Survival | Death | Survival | Death | |
| Observation group (n = 61) | 52 (85.25) | 9 (14.75) | 43 (70.49) | 18 (29.51) | 31 (50.82) | 30 (49.18) |
| Control group (n = 61) | 48 (78.69) | 13 (21.31) | 40 (65.57) | 21 (34.43) | 26 (42.62) | yn (57.38) |
| Log-rank χ2 value | 0.884 | 0.470 | 0.961 | |||
| P value | 0.347 | 0.493 | 0.327 | |||
