title: Post-hospitalization course and predictive signs of suicidal behavior of suicidal patients admitted to a psychiatric hospital: a 2-year prospective follow-up study.
abstract: BACKGROUND
  Suicidal patients admitted to a psychiatric hospital are considered to be at risk of suicidal behavior (SB) and suicide. The present study aimed to seek predictors of SB recurrence of the high-risk patients by examining their post-hospitalization course.
  
  
  METHODS
  The design was 2-year prospective follow-up study of patients consecutively admitted with SB to a psychiatric center in Tokyo. The DSM-IV diagnoses and SB-related features of subjects were determined in structured interviews. Subsequently, the subjects underwent a series of follow-up assessments at 6-month intervals. The assessment included inquiries into SB recurrence, its accompanying suicidal intent (SI) and SF-8 health survey. Analyses of serial change over time in the follow-up data and Cox proportional hazards regression analyses of SB recurrence were performed.
  
  
  RESULTS
  106 patients participated in this study. The dropout rate during the follow-up was 9%. Within 2 years, incidences of SB as a whole, SB with certain SI (suicide attempt) and suicide were 67% (95% CI 58 - 75%), 38% (95% CI 29 - 47%) and 6% (95% CI 3 - 12%), respectively. Younger age, number of lifetime SBs and maltreatment in the developmental period were predictive of SB as a whole, and younger age and hopelessness prior to index admission were predictive of suicide attempt. Regarding diagnostic variables, anxiety disorders and personality disorders appeared to have predictive value for SB. Additionally, poor physical health assessed during the follow-up was indicated as a possible short-term predictor of SB recurrence.
  
  
  CONCLUSIONS
  This study demonstrated a high incidence of SB and suicide and possible predictors of SB recurrence in the post-hospitalization period of psychiatric suicidal patients. Specialized interventions should be developed to reduce the suicide risk of this patient population.
authors.affiliation: Department of Psychiatry, Tokyo Metropolitan Matsuzawa Hospital, Tokyo, Japan. nhayashi55@nifty.com
authors.forename: Naoki
authors.initials: N
authors.lastname: Hayashi
authors.forename: Miyabi
authors.initials: M
authors.lastname: Igarashi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Imai
authors.forename: Yuka
authors.initials: Y
authors.lastname: Yoshizawa
authors.forename: Kaori
authors.initials: K
authors.lastname: Utsumi
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: Taro
authors.initials: T
authors.lastname: Tokunaga
authors.forename: Kayo
authors.initials: K
authors.lastname: Ishimoto
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Harima
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Tatebayashi
authors.forename: Naoki
authors.initials: N
authors.lastname: Kumagai
authors.forename: Makoto
authors.initials: M
authors.lastname: Nozu
authors.forename: Hidetoki
authors.initials: H
authors.lastname: Ishii
authors.forename: Yuji
authors.initials: Y
authors.lastname: Okazaki
mesh_terms: D000328:Adult; D000367:Age Factors; D001008:Anxiety Disorders / Q000150:complications / Q000523:psychology; D005260:Female; D005500:Follow-Up Studies; D006304:Health Status; D006760:Hospitalization / Q000706:statistics & numerical data*; D006778:Hospitals, Psychiatric / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D008297:Male; D010554:Personality Disorders / Q000150:complications / Q000523:psychology; D016016:Proportional Hazards Models; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D012008:Recurrence; D012307:Risk Factors; D013405:Suicide / Q000523:psychology* / Q000706:statistics & numerical data; D013406:Suicide, Attempted / Q000523:psychology / Q000706:statistics & numerical data; D014041:Tokyo