Intensity-modulated radiotherapy versus three-dimensional conformal radiotherapy for stage I-II natural killer/T-cell lymphoma nasal type: dosimetric and clinical results

Table 3 Multivariate analysis for LCP and OS

Factor	OS		LCP
	Hazard ratio	p value	Hazard ratio	p value
	(95% CI)		(95% CI)
IMRT	1.12(0.43–2.93)	0.81	1.05(0.31–3.59)	0.94
ECOG score =2	2.59(1.08–6.22)	0.03	2.23(0.76–6.54)	0.02
LDH elevated^¶	3.05(1.03–9.06)	0.04	–	–
Stage = II^±	–	–	2.10(0.29–15.00)	0.46
Nasal cavity lesions with extensive invasion^&	1.30(0.83–2.06)	0.25	1.04(0.54–2.00)	0.92
Stage-modified IPI=2-3	0.95(0.40–2.24)	0.91	1.14(0.36–3.65)	0.83

^¶LDH elevation was accounted for in the multivariate analysis for LCP, but not for OS.
^±Stage = 2 was accounted for in the multivariate analysis for OS, but not for LCP.
^&Nasal cavity lesions with extensive invasion: the tumor invaded nasal cavity and two or more neighboring anatomic structures(pnasal sinuses, nasopharynx, oropharynx or laryngopharynx).

ISSN: 1748-717X