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Table 4 Test-retest intraclass correlation and Wilcoxon signed rank test

From: Development and preliminary evaluation of the validity and reliability of a revised illness perception questionnaire for healthcare professionals

IPQ-R HP subscales

4 weeks test-retest intraclass correlation (95 % CI)

4 weeks test-retest Wilcoxon z score (effect sizea)

Consequences

0.866 (0.618-0.957)

−1.221 (−0.24)

Timeline acute/chronic

0.751 (0.364-0.917)

−0.938 (−0.18)

Personal control

0.444 (−0.116-0.790)

−0.237 (−0.05)

Treatment control

0.839 (0.553-0.948)

−0.289 (−0.06)

Illness coherence

0.713 (0.264-0.908)

−1.086 (−0.21)

Timeline cyclical

0.417 (−0.148-0.777)

−0.843 (−0.17)

Emotional representations

0.844 (0.567-0.950)

−1.370 (−0.27)

  1. aEffect size: small = between 0.10 and 0.30; medium = between 0.30 and 0.50
  2. large = 0.50 or higher