Table 6: Relation between myotonia and pain in DM

Myotonia
None (N = 12) Mild (N = 45) Severe (N = 13) p
Intensity of pain in the previous week 1 13.8 (±19.8) 33.6 (±30.2) 31.5 (±29.0) 0.106
Current pain2 5 (41.7%) 28 (62.2%) 7 (53.8%) 0.429
Level of pain (1 - no pain, 10 - the worst possible pain)1
Worst pain in the last 24 hours 1.8 (±1.3) 3.8 (±2.7) 3.5 (±2.7) 0.062
Least pain in the last 24 hours 1.8 (±1.5) 2.1 (±1.5) 2.2 (±2.1) 0.776
Average pain in the last 24 hours 1.8 (±1.3) 2.9 (±2.0) 3.0 (±2.2) 0.180
Pain at the moment 1.6 (±0.9) 2.7 (±2.1) 2.4 (±1.9) 0.207
 

1The variables are described in terms of average (± SD); difference between groups tested by ANOVA.

2The variable is described in terms of absolute and relative frequencies; difference between groups tested by chi-square test of maximum likelihood.