Background: Antipsychotic medications significantly ameliorate the symptoms
of schizophrenia, but patients are often noncompliant with these medicatio
ns. Research evidence supports the use of depot antipsychotics in noncompli
ant patients.
Method: Between January 9, 1991, and December 19, 1995, 1307 veterans with
schizophrenia or schizoaffective disorder (ICD-9) were enrolled in a study
of enhanced psychosocial programming at 14 Veterans Administration Medical
Centers. All had a history of high inpatient use. At enrollment, clinicians
listed patient medications, rated patient compliance, and completed a Brie
f Psychiatric Rating Scale (BPRS) and Global Assessment of Functioning (GAF
). Patients reported medication side effects. We describe depot antipsychot
ic use among these patients and examine the relationship between depot use,
assessed compliance, and patient characteristics.
Results: At enrollment, 18% of patients in this cohort were receiving depot
antipsychotics however, clinicians reported that 49% had been noncompliant
with medication in the past year. Depot use varied significantly with trea
tment site, African Americans were more likely to receive depot antipsychot
ics and less likely to receive atypical antipsychotics than white patients.
Patients on depot and oral agents had similar levels of psychiatric sympto
ms, but patients on depot antipsychotics were more likely to receive high d
oses and complain of side effects.
Conclusion: Clinicians prescribed depot antipsychotics relatively infrequen
tly, despite high rates of noncompliance and high levels of inpatient use.
Variation in use with treatment site and ethnic group suggests barriers to
implementing research-based recommendations for depot use in noncompliant p
atients. Quality improvement programs should consider facilitating the appr
opriate use of depots.