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Table 3 Frequency and difference (X2) of the responses indicated by oralmaxillofacial surgeons (OMFS) and orthodontists (ORTHO) when evaluating spontaneously erupted lower third molars (n=44) after analysis of one (XR1) or two serial radiographs (XR1 + 2)

From: The prediction of impacted versus spontaneously erupted mandibular third molars

  OMFS ORTHO
  XR1 XR1+2 XR1 XR1+2
Correct 749 (63%) 531 (44.7%) 780 (65.7%) 713 (60%)
Error 439 (37%) 657 (55.3%) 408 (34.3%) 475 (40%)
Total 1188 (100%) 1188 (100%) 1188 (100%) 1188 (100%)
Kappa 0.077 (p<0.0001) 0.256 (p<0.0001)
X2 XR1 OMFS vs ORTHO 0.198
X2 XR1+2 OMFS vs ORTHO <0.0001