The article you requested is
Letter to the Editor
In the article “Empirical Examination of a Proposed Refinement to DSM-IV Posttraumatic Stress Disorder Symptom Criteria Using the National Comorbidity Survey Replication Data” by Jon D. Elhai, Ph.D., and colleagues in the April 2008 issue (J Clin Psychiatry 2008;69:597–602), 2 inaccuracies were reported in the first paragraph of the Results section on page 599.
- The correct standard errors for lifetime diagnostic prevalence rates of PTSD are 0.360 for the original DSM-IV PTSD model and 0.351 for the Spitzer PTSD model.
- The binomial approximation z test that compared the DSM-IV and Spitzer lifetime PTSD prevalence rates was inaccurately reported as being statistically significant, because of an error the authors made in calculating this comparison.