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Table 3 Guyatt's statistic and mean change in scales

From: The OnyCOE-t™ questionnaire: responsiveness and clinical meaningfulness of a patient-reported outcomes questionnaire for toenail onychomycosis

Scale Worsened N = 12 Stable N = 37 Improved N = 400
Symptom Frequency    
Mean Change 21.6 21.0 34.5
Guyatt's Statistic .82 .80 1.31
Symptom Bothersomeness    
Mean Change 1.5 18.9 24.1
Guyatt's Statistic .05 .64 .81
Physical Activities Problems    
Mean Change 18.3 9.0 30.1
Guyatt's Statistic .55 .27 .91
Appearance Problems    
Mean Change 16.3 12.7 34.4
Guyatt's Statistic .53 .41 1.11
Overall Problem    
Mean Change 22.2 25.2 44.0
Guyatt's Statistic .57 .65 1.13
Stigma    
Mean Change 4.7 5.3 15.4
Guyatt's Statistic .18 .20 .58
Treatment Satisfaction    
Mean Change 16.7 -2.1 46.1
Guyatt's Statistic .62 -.08 1.72