Table 3.

Multivariate analysis of the association between use of antibiotics and progression-free survival

Variable	Categories	HR	P-value	95% CI
Antibiotics	Yes versus no	1.707	0.008	1.147-2.539
Age	High versus low	0.552	0.003	0.374-0.814
ECOG performance status	1 versus 0	1.442	0.140	0.887-2.346
	2+ versus 0	1.924	0.014	1.142-3.242
LDH	Continuous, log2	1.447	<0.001	1.204-1.740

CI, confidence interval; ECOG, Eastern Cooperative Oncology Group; HR, hazard ratio; LDH, lactate dehydrogenase.