Table 3.

Cumulative survival ratios of different TTLVR subgroups

Subgroup	Cumulative survival rate (%)					Median survival (mo)	Mean survival (mo)
	6 mo	12 mo	24 mo	36 mo	60 mo
0%-25%	90.54	77.03	37.68	26.56	16.30	18	28
25%-50%	88.89	48.89	18.72	8.92	4.04	12	16
50%-70%	54.55	18.18	6.06	3.03	0.00	7	10
≥ 70%	37.50	0.00	0.00	0.00	0.00	6	6

Significant differences in survival were recognized for cumulative survival ratios of different TTLVR subgroups by log rank test: 0％-25% vs 25%-50% (χ² = 9.1, P = 0.003), 0％-25% vs 50%-70% (χ² = 33.71, P < 0.001), 0%-25% vs ≥ 70% (χ² = 38.98, P < 0.001), 25%-50% vs 50％-70% (χ² = 9.08, P = 0.003), 25%-50% vs ≥ 70% (χ² = 22.91, P < 0.001), 50%-70% vs ≥ 70% (χ² = 1.71, P = 0.19).