TABLE 2.

Summary of Errors of Medical Interpretation Observed in Clinical Encounters in the Study

Interpreter TypeNo. (%) Errors by Error CategoryNo. (%) Errors of Potential Clinical ConsequenceTotal Errors
OmissionSubstitutionAdditionEditorializationFalse Fluency
Hospital (N = 6)117 (51%)27 (12%)17 (7%)20 (9%)50 (22%*)123 (53%)231
Ad hoc (N = 7)90 (55%)26 (16%)15 (9%)19 (12%)15 (9%*)127 (77%)165
Totals207 (52%)53 (13%)32 (8%)39 (10%)65 (16%)250 (63%)396
  • * P = .007 by Yates-corrected χ2 test for comparison between hospital versus ad hoc interpreters.

  • P < .001 by Yates-corrected χ2 test for comparison between hospital versus ad hoc interpreters.