title: Predictive validity and clinical utility of DSM-5 Somatic Symptom Disorder: prospective 1-year follow-up study.
abstract: OBJECTIVE
  To compare the predictive validity and clinical utility of DSM-IV somatoform disorders and DSM-5 Somatic Symptom Disorder (SSD) at 12-month follow-up.
  
  
  METHODS
  In a sample of psychosomatic inpatients (n=322, mean age=45.6 years (SD 10.0), 60.6% females) we prospectively investigated DSM-IV somatoform disorders and the DSM-5 diagnosis of SSD plus a variety of psychological characteristics, somatic symptom severity, and health-related quality of life at admission, discharge, and follow-up.
  
  
  RESULTS
  DSM-IV diagnoses and DSM-5 SSD similarly predicted physical functioning at follow-up; SSD also predicted mental functioning at follow-up. Bodily weakness, intolerance of bodily complaints, health habits, and somatic attribution at admission were significant predictors of physical functioning at follow-up. The change in physical functioning during inpatient therapy was a significant predictor for the course of physical functioning until follow-up.
  
  
  CONCLUSIONS
  Psychological symptoms appear to be predictively valid diagnostic criteria for the 12-month functional outcome in patients with SSD. Mental functioning can be better predicted by the DSM-5 diagnosis than by DSM-IV diagnoses. Not the change in single psychological features but in physical functioning during the treatment interval predicted the change in physical functioning until follow-up.
authors.affiliation: Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Hamburg-Eppendorf and Schön Klinik Hamburg-Eilbek, Hamburg, Germany. Electronic address: k.voigt@uke.uni-hamburg.de.
authors.forename: Katharina
authors.initials: K
authors.lastname: Voigt
authors.forename: Eileen
authors.initials: E
authors.lastname: Wollburg
authors.forename: Nina
authors.initials: N
authors.lastname: Weinmann
authors.forename: Annabel
authors.initials: A
authors.lastname: Herzog
authors.forename: Björn
authors.initials: B
authors.lastname: Meyer
authors.forename: Gernot
authors.initials: G
authors.lastname: Langs
authors.forename: Bernd
authors.initials: B
authors.lastname: Löwe
mesh_terms: D000328:Adult; D015928:Cognitive Behavioral Therapy; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D005500:Follow-Up Studies; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D010343:Patient Admission; D010351:Patient Discharge; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011602:Psychophysiologic Disorders / Q000175:diagnosis* / Q000523:psychology* / Q000628:therapy; D011788:Quality of Life; D015203:Reproducibility of Results; D013001:Somatoform Disorders / Q000175:diagnosis* / Q000523:psychology* / Q000628:therapy
keywords: Classification of diseases; Diagnosis; Diagnostic and Statistical Manual of Mental Disorders; Somatoform disorders; Validation studies as topic