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Table 1 Inter- and intraobserver agreement for photograph reading measured by Kappa and Average Measure Intraclass Coefficient (ICC)

From: The use of digital photographs for the diagnosis of hand osteoarthritis: the AGES-Reykjavik study

  Joint Interobserver Interobserver Intraobserver
   kappa ICC ICC
Left DIP5 0.83 0.85 0.90
  DIP4 0.87 0.83 0.91
  DIP3 0.85 0.84 0.93
  DIP2 0.80 0.84 0.95
  PIP5 0.92 0.79 0.81
  PIP4 0.94 0.78 0.90
  PIP3 0.86 0.86 0.92
  PIP2 0.84 0.81 0.81
  CMC1 0.87 0.88 0.91
Right DIP5 0.82 0.84 0.87
  DIP4 0.88 0.80 0.94
  DIP3 0.88 0.85 0.93
  DIP2 0.79 0.78 0.95
  PIP5 0.95 0.83 0.88
  PIP4 0.97 0.80 0.89
  PIP3 0.89 0.87 0.89
  PIP2 0.84 0.81 0.84
  CMC1 0.89 0.89 0.95
Average for all 18 joints 0.87 0.83 0.89