Table 3.

Multivariable analysis with the occurrence of neutropenia as dependent variable.

Variable	OR (95% CI)	p-Value
sc. PEG-IFN-β-1a	7.231 (1.721–30.391)	0.007
Treatment duration	1.032 (0.999–1.066)	0.060
Age at Tx-start	0.996 (0.943–1.052)	0.879
Number of previous therapies	0.423 (0.114–1.499)	0.179
Leukocytes at baseline	0.686 (0.473–0.997)	0.048

Significant p values are highlighted in bold.

CI, confidence interval; IFN-β, interferon-beta; OR, odds ratio; sc., subcutaneous; Tx, drug treatment.