Posttraumatic stress disorder among mothers of pediatric cancer survivors: diagnosis, comorbidity, and utility of the PTSD checklist as a screening instrument.

OBJECTIVE: To examine posttraumatic stress disorder (PTSD) in mothers of survivors of childhood cancer. Comorbidity of anxiety and depressive disorders, prevalence of subclinical PTSD, and the utility of a self-report measure as a screening instrument for PTSD were also investigated. METHOD: Mothers (n = 65) completed a questionnaire self-report PTSD checklist (PCL-C). Mothers were administered several modules of the SCID: nonpatient edition by telephone, including the PTSD, Generalized Anxiety, and Major Depressive Disorder modules. RESULTS: We diagnosed 6.2% of the sample with current PTSD. An additional 20% had subclinical PTSD. One of four mothers with PTSD diagnoses had a comorbid diagnosis of an anxiety and depressive disorder. The PCL-C evidenced diagnostic utility as a screening instrument. However, a moderate number of false-positives would result if the recommended cut-off on the instrument was used. CONCLUSIONS: The PCL-C had diagnostic utility in screening mothers of childhood cancer survivors. The presence of comorbid diagnoses such as anxiety and depression should be examined.