Data regarding the development of a structured interview measuring alterations that may accompany extreme stress are presented. A list of 27 criteria often seen in response to extreme trauma and not addressed by DSM-IV criteria for posttraumatic stress disorder (PTSD) were generated based on a systematic review of the literature and a survey of 50 experts. A structured interview for disorders of extreme stress (SIDES) measuring the presence of these criteria was administered to 520 subjects as part of the DSM-IV PTSD field trials. Inter-rater reliability as measured by Kappa coefficients for lifetime Disorders of Extreme Stress was .81. Internal consistency using coefficient alpha ranged from .53 to .96. Results indicate that the SIDES is a useful tool for investigation of response to extremes stress.

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Twenty three adolescents with a history of cancer, 27 physically abused adolescents, and 23 healthy, nonabused adolescents were administered structured posttraumatic stress disorder (PTSD) interviews and self-report questionnaires regarding family functioning. Thirty five percent of adolescent cancer subjects met criteria for lifetime PTSD as compared to only 7% of the abused adolescents: 17% of the cancer subjects and 11% of the abuse subjects met criteria for current PTSD. Adolescents with cancer viewed their mothers and fathers as significantly more caring and more protective than the comparison and abused adolescents. Cancer subjects who met criteria for lifetime PTSD saw their families as significantly more chaotic than those who did not have PTSD. Eighty three percent of cancer subjects who had lifetime PTSD also had mothers who had PTSD.