Table 3.

Predictors of EDSS score based on a linear regression model.

	β	p
CP course	3.382	<0.001
BDNF rs6265 (Val/Met) polymorphism	0.559	0.066

Adjusted R-square for the model: 0.473. EDSS, Expanded Disability Status Scale; CP, chronic progressive; BDNF, brain-derived neurotrophic factor. Covariates that were not retained in the final model are as follows: sex, age, disease duration, treatment with disease-modifying therapies, and number of relapses in the last year. The bold values are the statistically significant ones (p < 0.05).