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Table 4 Intra-class correlation coefficients (ICCs) and the 95% Limits of Agreement (95%LOA) for intra- and inter-rater reliability of the measurement of the Toe Brachial Index

From: The reliability of toe systolic pressure and the toe brachial index in patients with diabetes

  Intra-rater reliability
Rater ICC3,1(95% CI) 95% LOA (mmHg)
A 0.72 (0.50 to 0.86) (-0.24 to 0.32)
B 0.73 (0.52 to 0.86) (-0.22 to 0.30)
C 0.80 (0.63 to 0.90) (-0.19 to 0.23)
Average 0.75 (0.55 to 0.87) (-0.22 to 0.28)
  Inter-rater reliability
  ICC2,3 (95% CI) 95% LOA (mmHg)
Session 1 0.77 (0.62 to 0.87)* (-0.21 to 0.22)
Session 2 0.81 (0.68 to 0.90)* (-0.19 to 0.27)
  1. Note: + = z-Transformed data; * = statistically significant at p < 0.01; 95%CI = 95% confidence intervals; ICC3,1 = Intra-class coefficient, type 3,1; ICC2,3 = Intra-class coefficient, type 2,3.