Table 3.

Summary of Multiple Regression analysis for model examining difference in variances of NAWM F values in MS compared to DM1 patients and healthy controls adjusted for age and sex.

Variable	ϐ	P value	Confidence interval
Intercept	0.225
DM1	0.45	<0.001	0.033 to 0.057
Control	0.42	<0.001	0.028 to 0.055
Age	0.00	0.858	0.0 to 0.0
Sex	−0.011	0.013	−0.019 to −0.002

Abbreviations: DM1: myotonic dystrophy type 1; MS: multiple sclerosis; NAWM: normal appearing white matter.