Table 3.

Multivariate analysis for serologic response in patients with CLL

Variable	Odds ratio	95% CI	P value
Age ≤65 y	2.5	0.9-6.6	.067
Lack of active therapy	5.6	2.3-13.8	<.001
Serum IgG level ≥550 mg/dL	1.0	0.3-3.2	.974
Serum IgA level 80 mg/dL	5.8	2.1-15.9	<.001