Table IV.

Multivariate analyses of clinical characteristics, baseline PET/CT parameters and interim treatment response for PFS and OS.

	2-year PFS			2-year OS
Variables	RR	95% CI	P-value	RR	95% CI	P-value
Ann Arbor stage	2.415	0.836–6.976	0.043		–
Dmax	2.854	0.946–8.609	0.036	4.016	1.103–14.629	0.035
Interim treatment response	11.437	3.594–36.397	<0.001	7.619	2.092–27.742	0.002

PFS, progression-free survival; OS, overall survival; RR, relative risk; CI, confidence interval; Dmax, maximum diameter of the maximum lesion.