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Table 3 Test-retest reliability correlation coefficients

From: Japanese version of the Dermatology Life Quality Index: validity and reliability in patients with acne

  Correlation coefficient* ICC**
Total Score 0.91 0.90
Symptom and feeling 0.65 0.62
Daily activities 0.80 0.78
Leisure 0.81 0.81
Work and School 0.56 0.57
Personal relationships 0.64 0.64
Treatment 0.49 0.50
  1. N = 44; *Pearson's correlation coefficient; ** Intraclass Correlation Coefficient