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Table 1 Frequency of diagnostic response regarding extraction, monitoring or other alternatives for lower third molars given by orthodontists (n = 28) and oral/maxillofacial surgeons (OMFSs) (n = 28). Frequency distribution was evaluated by chi-square (χ²) and agreement between evaluators by Kappa test

From: The ability of orthodontists and oral/maxillofacial surgeons to predict eruption of lower third molar

  Orthodontists OMFSs Kappa (p value)
Extraction 360 (37.8 %) 472 (49.6 %) 0.76 (<0.0001)
Monitoring 586 (61.6 %) 478 (50.2 %)
Others 6 (0.6 %) 2 (0.2 %)  
Total 952 (100 %) 952 (100 %)  
Ortho × OMFSs (x 2) 25.56 (p < 0.0001), power 99 %