Table 4

Minimal Clinically Important Difference

Average Difference Between Adjacent PRO Scores

Scale
12.5% Difference in nail clearing*
25% Difference in nail clearing*
≥ 5 mm new nail growth

Symptom Frequency
6.48
9.12
17.28
Symptom Bothersomeness
5.95
5.84
11.83
Physical Activities Problems
7.54
8.32
17.69
Appearance Problems
8.04
8.69
18.51
Overall Problem
11.19
11.77
25.32
Stigma
5.44
5.21
9.41
Treatment Satisfaction
7.42
9.11
16.37
Overall
7.30
8.45
16.63

* Based on comparisons that are significant at the .05 level

Based on comparisons that are significant at the .0001 level

Potter et al. Health and Quality of Life Outcomes 2006 4:50   doi:10.1186/1477-7525-4-50