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. 2018 Oct 2;51(3):919–932. doi: 10.4143/crt.2018.230

Table 6.

Survival parameters of different risk groups

	Probability (95% CI)			p-value^a)	p-value^b)
	IPI 0-1 (n=317)	IPI 2 (n=172)	IPI 3-5 (n=213)	p-value^a)	p-value^b)
3-Year DFS	0.882 (0.841-0.923)	0.743 (0.663-0.823)	0.734 (0.654-0.814)	< 0.001	0.779
3-Year OS	0.868 (0.831-0.905)	0.760 (0.695-0.825)	0.650 (0.585-0.715)	< 0.001	0.014
3-Year PFS	0.765 (0.718-0.812)	0.575 (0.501-0.650)	0.521 (0.450-0.592)	< 0.001	0.169

CI, confidence interval; IPI, International Prognostic Index; DFS, disease-free survival; OS, overall survival; PFS, progression-free survival.

^a)

Patients with IPI 2 compared with patients with IPI 0-1,

^b)

Patients with IPI 3-5 compared with patients with IPI 2.