Table 1 Clinical and demographic characteristics of recruited DM1 patients

Patients Enrolled

81

Drop-out

16

Final Sample

65

Age

46.1 ± 12.3 yrs

Age range: 18–70 yrs

Sex

F = 37 % (24)

M = 63 % (41)

Age at onset

31.5 ± 14.7 yrs

[CTG]n E1

37.7 % (25)

[CTG]n E2

58.5 % (38)

[CTG]n E3

3.8 % (2)

Transmission

78 % paternal

22 % maternal

Educational level

Mean 11.6 ± 3.5 yrs

Time from disease onset

Mean 10.2 ± 7.4 yrs

Severity of muscular involvement (MIRS)

Mean = 2.85 ± 1

MIRS = 1

7.3 %

MIRS = 2

36.4 %

MIRS = 3

27.3 %

MIRS = 4

21.8 %

MIRS = 5

7.3 %