Table 1: Sex, age distribution, and descriptors of disability (6mWT, MRC sum score)

Overall (N=70) DM1 (N=21) DM2 (N=49) p
Sex 1
Male 22 (31.4%) 11 (52.4%) 1 (22.4%) 0.023
Female 48 (68.6%) 10 (47.6%) 38 (77.6%)
Age 2 52.3 (23.6-67.3) 36.6 (18.4-60.3) 56.0 (25.2-69.1) 0.002
age at onset of disease (N=67)2 35.0 (15.0-56.0) 22.0 (8.0-48.0 40.0 (15.0-58.0) 0.007
MRC sum score2 153.1 (110.8-170.0) 148.0 (119.5-169.0) 153.5 (108.8-170.0) 0.481
6-minute walk test 2 (N=58) 382.5 (90.0-615.0) 347.5 (85.0-605.0) 392.5 (115.0-615.0) 0.444


1The variables are described in terms of absolute and relative frequencies; statistical testing by Fisher's exact test.

2The variable is described by themedian (5%–95% percentile). Statistical testing by Mann-Whitney U test.