title: Influence of psychiatric disorders on surgical outcomes and care resource use in Japan.
abstract: OBJECTIVE
  The aim of this study was to quantify the effects of psychiatric disorders on major surgery outcomes and care resource use.
  
  
  METHODS
  This study adopted a retrospective cohort study design. The samples consisted of hospital stays. Subjects were patients who had undergone major surgery. We used multilevel regression analysis to quantify the influence of psychiatric disorders on major surgery outcomes and care resource use.
  
  
  RESULTS
  The total number of hospital stays included in the study was 5569, of which 250 were patients with psychiatric disorders. Compared with those without psychiatric disorders, those with schizophrenia had a significantly higher risk of complications, and those with neurotic disorder tended to have fewer complications. Total cost was significantly higher for those with schizophrenia and mood disorder and significantly lower in those with neurotic disorder. Lengths of stay were significantly longer for those with schizophrenia and mood disorder but not for those with neurotic disorder. Post-surgical mortality was equivalent among those with any psychiatric disorder and among those without a psychiatric disorder.
  
  
  CONCLUSIONS
  The study revealed that surgical outcomes and care resource use are differentiated by psychiatric disorders.
authors: Department of Healthcare Administration and Management, Graduate School of Healthcare Sciences, Kyushu University, Fukuoka 812-8581, Japan. Electronic address: toshikimaeda1216@gmail.com.
authors: Toshiki
authors: T
authors: Maeda
authors: Department of Healthcare Administration and Management, Graduate School of Healthcare Sciences, Kyushu University, Fukuoka 812-8581, Japan. Electronic address: babazono@hcam.med.kyushu-u.ac.jp.
authors: Akira
authors: A
authors: Babazono
authors: Department of Healthcare Administration and Management, Graduate School of Healthcare Sciences, Kyushu University, Fukuoka 812-8581, Japan. Electronic address: takumi.nishi.19860614@gmail.com.
authors: Takumi
authors: T
authors: Nishi
authors: Division of Internal Medicine, Okinawa Chubu Hospital, 281 Miyazato, Uruma, Okinawa 904-2293, Japan. Electronic address: tamaki_kazumitsu@hosp.pref.okinawa.jp.
authors: Kazumitsu
authors: K
authors: Tamaki
mesh_terms: D000328:Adult; D000368:Aged; D001008:Anxiety Disorders / Q000191:economics / Q000453:epidemiology; D015897:Comorbidity; D005260:Female; D006760:Hospitalization / Q000191:economics / Q000706:statistics & numerical data*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D001523:Mental Disorders / Q000191:economics / Q000453:epidemiology*; D008875:Middle Aged; D019964:Mood Disorders / Q000191:economics / Q000453:epidemiology; D000075384:Neuroticism; D011183:Postoperative Complications / Q000191:economics / Q000453:epidemiology* / Q000401:mortality; D012559:Schizophrenia / Q000191:economics / Q000453:epidemiology*; D013514:Surgical Procedures, Operative / Q000191:economics / Q000401:mortality / Q000706:statistics & numerical data*
keywords: Care resource use; Hospital administrative data; Psychiatric disorder; Surgical outcomes