Table 3: The intra-rater and inter-rater reliability of the Comfort-B Vietnamese version between nurses before, during and after wound dressing replacement at the first and second assessment

	Before (n=5) ICC (95%CI)	During (n=5) ICC (95%CI)	After (n=5) ICC (95%CI)
First assessment (n=34)*	0.82 (0.61; 0.97)	0.79 (0.56; 0.97)	0.91 (0.78; 0.99)
Second assessment (n=15)*	0.86 (0.66; 0.98)	0.90 (0.74; 0.99)	0.98 (0.94; 1.00)
Average-group intra-rater (n=15)**	0.94 (0.78; 1.10)	0.90 (0.78; 1.01)	0.97 (0.92; 1.02)

ICC: Intraclass Correlation Coefficient; 95%CI: 95% Confidence Interval
Two-way random-effects absolute agreement model was used to assess inter-rater reliability between 34 nurses at the first assessment and between 15 nurses at the second assessment with before, during and after wound dressing replacement.
5 videos were assessed by 15 nurses assessed at two times; the second assessment was two weeks away from the first assessment. Average-group intraclass correlation coefficient was reported for the group intra-rater using two-way mixed effects absolute agreement model.
All p-value <0.01