Table 2 Prognostic relevance of the IPI... | American Society of Hematology

Table 2

Prognostic relevance of the IPI¹⁸ (n = 432) risk factors for overall survival determined in a multiple Cox regression

Prognostic factor	Comparison	RR	95% LCL	95% UCL	P
Age, y	≥ 60 vs < 60	1.7	1.2	2.3	.002
ECOG	2-4 vs 0-1	2.8	1.8	4.5	<.001
LDH	elevated vs normal	1.6	1.2	2.3	.006
No. of extranodal sites	> 1 vs ≤1	1.2	0.8	1.6	.33

Prognostic factor	Comparison	RR	95% LCL	95% UCL	P
Age, y	≥ 60 vs < 60	1.7	1.2	2.3	.002
ECOG	2-4 vs 0-1	2.8	1.8	4.5	<.001
LDH	elevated vs normal	1.6	1.2	2.3	.006
No. of extranodal sites	> 1 vs ≤1	1.2	0.8	1.6	.33

Ann Arbor stage was III or IV in all patients.

RR indicates relative risk; LCL, lower confidence limit; UCL, upper confidence limit; and ECOG, ECOG performance status.