title: Predictors of aripiprazole treatment continuation in hospitalized patients.
abstract: OBJECTIVE
  Aripiprazole is a second-generation antipsychotic that is increasingly prescribed in a variety of psychiatric disorders. The goal of this study was to investigate patient and treatment factors associated with aripiprazole treatment continuation on hospital discharge in psychiatric inpatients.
  
  
  METHODS
  This was a retrospective cohort analysis of patients admitted to a psychiatric hospital between January 1, 2003, and June 30, 2006, and treated with aripiprazole. The goal was to determine factors associated with continuation of aripiprazole throughout the hospital stay and on discharge from the hospital. Covariates assessed included patient demographics, prior psychiatric hospitalizations, diagnoses, prior antipsychotic use, and concomitant psychotropic medications. Aripiprazole-specific covariates were starting and maximum dose and dose titration pattern. Diagnoses were identified using ICD-9-CM codes.
  
  
  RESULTS
  There were 1957 aripiprazole-treated patients included in this study, and 1573 (80%) continued aripiprazole treatment at the time of hospital discharge. Median starting doses were lower (5 mg/day) for younger and older patients, and patients with psychotic disorders received higher doses than other patients. Approximately 58% of patients had at least 1 aripiprazole dose titration while hospitalized, and most (73%) of those patients had a dose titration within 3 days of admission. Predictors of treatment continuation in this broad patient population were younger age, a diagnosis of bipolar or major depressive disorder, higher maximum aripiprazole doses, and upward dose titration within 3 days of admission. Patients receiving concomitant anticholinergics or antipsychotics were less likely to continue treatment as were those receiving aripiprazole at the time of hospitalization.
  
  
  CONCLUSIONS
  In this acute inpatient psychiatric setting, continuation of aripiprazole treatment on discharge was achieved in most patients. Demographic, diagnostic, and treatment factors predicting aripiprazole treatment effectiveness were identified.
authors.affiliation: Department of Pharmacy and Therapeutics, School of Pharmacy, 921 Salk Hall, University of Pittsburgh, Pittsburgh, PA 15261, USA. coley@pitt.edu
authors.forename: Kim C
authors.initials: KC
authors.lastname: Coley
authors.forename: Tanya J
authors.initials: TJ
authors.lastname: Fabian
authors.forename: Edward
authors.initials: E
authors.lastname: Kim
authors.forename: Diane K
authors.initials: DK
authors.lastname: Ammerman
authors.forename: Tina M
authors.initials: TM
authors.lastname: Scipio
authors.forename: Melissa I
authors.initials: MI
authors.lastname: Saul
authors.forename: Myoung S
authors.initials: MS
authors.lastname: Kim
authors.forename: Richard
authors.initials: R
authors.lastname: Whitehead
authors.forename: Rohan
authors.initials: R
authors.lastname: Ganguli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000553:Ambulatory Care; D014150:Antipsychotic Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D000068180:Aripiprazole; D001714:Bipolar Disorder / Q000175:diagnosis / Q000188:drug therapy* / Q000523:psychology; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D003865:Major Depressive Disorder / Q000175:diagnosis / Q000188:drug therapy* / Q000523:psychology; D004305:Dose-Response Relationship, Drug; D004334:Drug Administration Schedule; D004359:Drug Therapy, Combination; D005260:Female; D006760:Hospitalization; D006801:Humans; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D010351:Patient Discharge; D010879:Piperazines / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D011618:Psychotic Disorders / Q000175:diagnosis / Q000188:drug therapy* / Q000523:psychology; D015363:Quinolones / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D014150:Antipsychotic Agents; D010879:Piperazines; D015363:Quinolones; D000068180:Aripiprazole