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Table 9 Etiology, preventability, and the JCAHO severity ratings: Agreement between pairs of observers for 141 adverse occurrences coded by all four reviewers.

From: Towards standardized measurement of adverse events in spine surgery: conceptual model and pilot evaluation

  O-A1 O-JN2 O-SN3 A-JN4 A-SN5 JN-SN6 Mean7
Etiology, kappa 0.33 0.33 0.33 0.43 0.45 0.28 0.36
Preventability, weighted kappa 0.33 0.60 0.56 0.24 0.43 0.49 0.44
JCAHO Severity, weighted kappa 0.25 0.57 0.34 0.26 0.21 0.31 0.33
  1. 1Agreement between the orthopedic surgeon reviewer(O) and the anesthesiologist(A).
  2. 2Agreement between the orthopedic surgeon reviewer(O) and the junior neurosurgeon(JN).
  3. 3Agreement between the orthopedic surgeon reviewer(O) and the senior neurosurgeon(SN).
  4. 4Agreement between the anesthesiologist(A) and the junior neurosurgeon(A).
  5. 5Agreement between the anesthesiologist(A) and the senior neurosurgeon(SN).
  6. 6Agreement between the junior neurosurgeon(JN) and the senior neurosurgeon(SN).
  7. 7 Mean for all six pairs of reviewers.