Skip to main content

Table 3 Concordance correlation statistics for the reproducibility of assessing leg dimensions on three occasions

From: The reproducibility of acquiring three dimensional gait and plantar pressure data using established protocols in participants with and without type 2 diabetes and foot ulcers

Variable CCC measurement 1 v 2 [95 % CI] CCC measurement 1 v 3 [95 % CI] CCC measurement 2 v 3 [95 % CI]
Left leg length 0.982 [0.949-0.994] 0.919 [0.776-0.972] 0.933 [0.822-0.975]
Left knee diameter 0.965 [0.895-0.988] 0.962 [0.891-0.987] 0.997 [0.990-0.999]
Left ankle diameter 0.961 [0.892-0.985] 0.944 [0.841-0.981] 0.971 [0.910-0.991]
Right leg length 0.994 [0.983-0.998] 0.972 [0.917-0.991] 0.977 [0.931-0.992]
Right knee diameter 0.986 [0.958-0.996] 0.984 [0.955-0.994] 0.980 [0.943-0.993]
Right ankle diameter 0.967 [0.902-0.989] 0.959 [0.878-0.986] 0.957 [0.876-0.985]
ASIS distance 0.994 [0.981-0.998] 0.995 [0.984-0.998] 0.997 [0.992-0.999]
Mass 0.999 [0.999-0.999] 0.999 [0.999-0.999] 0.999 [0.999-0.999]
Height 0.999 [0.999-0.999] 0.999 [0.999-0.999] 0.999 [0.999-0.999]
  1. Legend: Concordance correlation coefficients (CCC) were calculated using http://www.niwa.co.nz/node/104318/concordance. Two sided 95 % confidence intervals are presented with the CCC value for each measurement. The strength of agreement was considered as: Almost perfect >0.90; Substantial >0.8-0.9; Moderate 0.65-0.8; and Poor <0.65. ASIS = anterior superior iliac spine