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Table 6 Kappa statistics for 2-week test-retest reliability for each question in VEINES-QOLa

From: Validation of the VEINES-QOL quality of life instrument in venous leg ulcers: repeatability and validity study embedded in a randomised clinical trial

Question Kappa Standard error Significance
1a 0.56 0.054 P < 0.0001
1b 0.58 0.053 P < 0.0001
1c 0.44 0.053 P < 0.0001
1d 0.67 0.054 P < 0.0001
1e 0.54 0.053 P < 0.0001
1f 0.68 0.054 P < 0.0001
1g 0.59 0.054 P < 0.0001
1h 0.59 0.053 P < 0.0001
1i 0.62 0.054 P < 0.0001
3 0.56 0.052 P < 0.0001
4a 0.58 0.106 P < 0.0001
4b 0.59 0.053 P < 0.0001
4c 0.53 0.053 P < 0.0001
4d 0.46 0.053 P < 0.0001
5a 0.42 0.055 P < 0.0001
5b 0.46 0.055 P < 0.0001
5c 0.55 0.054 P < 0.0001
5d 0.48 0.054 P < 0.0001
6 0.63 0.051 P < 0.0001
7 0.73 0.052 P < 0.0001
8a 0.55 0.052 P < 0.0001
8b 0.64 0.052 P < 0.0001
8c 0.67 0.052 P < 0.0001
8d 0.61 0.052 P < 0.0001
8e 0.71 0.052 P < 0.0001
  1. aIndividual questions should be repeatable, i.e. answers on different occasions should be related if the questionnaire is valid