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Table 4 Intra-rater agreement on treatment need using the GBON index and the AC index at different treatment need thresholds

From: Assessment of orthodontic borderline treatment need: A comparison of two aesthetic indices

  GBON AC at treatment threshold 4 AC at treatment threshold 5 AC at treatment threshold 6
Perfect agreement 84% 79% 80% 85%
Kappa score 0.64 0.55 0.59 0.60