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Table 1 Intra-rater agreement for ordinal radiographic feature scores (0–3) in individual joints

From: The effect of variation in interpretation of the La Trobe radiographic foot atlas on the prevalence of foot osteoarthritis in older women: the Chingford general population cohort

  Joints Osteophytes Joint space narrowing
Left foot (n = 20)
Dorsoplantar view
1st Metatarsophalangeal joint Kw = 0.5; pca = 53% Kw = 0.6; pca = 81%
1st Cuneo-metatarsal joint Kw = 0.4; pca = 48% Kw = 0.5; pca = 57%
2nd Cuneo-metatarsal joint Kw = 0.8; pca = 86% Kw = 0.7; pca = 81%
Navicular 1st cuneiform joint Kw = 0.5; pca = 67% Kw = 0.6; pca = 76%
Talo-navicular joint a Kw = 0.2; pca = 67%
Right foot (n = 20)
Dorsoplantar view
1st Metatarsophalangeal joint Kw = 0.6; pca = 62% Kw = −0.1; pca = 33%
1st Cuneo-metatarsal joint Kw = 0.5; pca = 57% Kw = 0.5; pca = 62%
2nd Cuneo-metatarsal joint Kw = 0.3; pca = 79% Kw = 0.5; pca = 67%
Navicular 1st cuneiform joint Kw = 0.6; pca = 86% Kw = 0.6; pca = 71%
Talo-navicular jointa a Kw = 0.3; pca = 71%
  1. Key: Kw Stata pre-recorded weighting was used for kappa weighting disagreements, pca percentage agreement was based on all LFA categories (0–3)
  2. a Osteophyte scores for the talonavicular joints were not computed as this is not included within the AFA guidance