Table 3.

Agreement between digital image assessors

	Baseline (n = 112)	6 weeks (n = 108)a
Agreement on image usability
Both assessors agree on image usability	71 (63%)	58 (54%)
Cohen’s Kappa (95% CI)	0.23 (0.07 to 0.40)	0.12 (−0.04 to 0.27)
Agreement on blinded digital measurements
Both assessors’ measurements available	52 (46%)	40 (37%)
ICC of assessors’ measurements (95% CI)	1.00 (1.00 to 1.00)	1.00 (1.00 to 1.00)

All data are N (%) unless otherwise indicated

^a4 patients were lost to follow-up (did not have a 6-week visit)

CI confidence interval, ICC intraclass correlation coefficient