Table 5.

White matter hyperintensities rated according the ARWMC scale in patients with myotonic dystrophy types 1 and 2 and control subjects (mean ± SD)

	Myotonic dystrophy type 1 patient group	Myotonic dystrophy type 2 patient group	Control group
Total score	1.82 ± 2.79 (0.03)*	1.0 ± 1.75 (0.15)	0.39 ± 0.66
Frontal subscore	1.18 ± 1.68 (0.00)*	0.55 ± 0.86 (0.02)*	0.09 ± 0.29
Parieto-occipital subscore	0.45 ± 1.14 (0.52)	0.45 ± 1.10 (0.51)	0.26 ± 0.62
Temporal subscore	0.18 ± 0.85 (0.32)	0	0
Infratentorial subscore	0 (0.32)	0 (0.32)	0.04 ± 0.21

*Significant differences (P < 0.05) between patient and control groups. P-values are given in brackets.

ARWMC = age-related white matter change score.