Effects of radiotherapy on lymphocytes in patients with middle and lower esophageal cancer and its relationship with prognosis

Table 6 Effect of CoTNM-heart V₁₀, CoTNM-Lung V₅, and CoTNM-lung V₂₀ on overall survival and progression-free survival

Characteristics	N	Median OS	OS (%)			χ2	P value	Median PFS	PFS (%)			χ2	P value
			1 year	2 years	3 years				1 year	2 years	3 years
CoTNM- heartV10						5.446	0.066					5.418	0.067
0 score	40	26.3	87.5	52.5	44.4			20.2	70.0	46.6	43.7
1 score	50	24.8	68.0	54.0	42.5			17.3	61.7	40.5	37.8
2 score	22	11.8	50.0	31.8	26.5			6.6	36.4	31.2	20.8
CoTNM-lungV5						17.499	0.000					17.440	0.000
0 score	40	-	82.5	62.5	54.6			20.2	75.0	48.5	45.9
1 score	33	29.9	84.8	57.6	44.9			-	72.5	53.2	49.1
2 score	39	11.8	48.7	28.2	21.2			6.6	33.3	22.2	15.2
CoTNM-lungV20						14.068	0.001					11.122	0.004
0 score	42	28.5	85.7	57.1	49.0			17.6	69.0	47.6	45.0
1 score	48	24.4	72.9	52.1	40.8			20.2	64.3	43.9	39.1
2 score	22	7.7	40.9	27.3	21.8			5.8	31.8	21.2	14.1

OS: Overall survival; PFS: Progression-free survival.