title: Prevalence of Parkinson disease and Parkinson disease dementia in community nursing homes.
abstract: OBJECTIVE
  To estimate the prevalence of Parkinson disease (PD) and Parkinson disease dementia (PDD) in community nursing homes. To estimate how many residents who meet criteria for PDD have been diagnosed with PDD and prescribed a Federal Drug Administration (FDA)-approved treatment for PDD.
  
  
  METHODS
  Three private Saint Louis metropolitan area nursing homes.
  
  
  METHODS
  Fifty-five residents with a chart diagnosis of PD from a total of 714 residents were identified. Sixteen subjects or families did not give consent and two were excluded from the study because advanced stage of the illness impaired evaluation. Thirty-seven subjects with an established diagnosis of PD participated in the study.
  
  
  METHODS
  A chart review was used to identify the study sample: residents with an established diagnosis of PD. Consent was obtained from the nursing home administration, families or guardians, and the residents themselves (where applicable). Study data were obtained from review of residents' medical charts, family/caregiver interview, resident interview, resident cognitive testing (Mini-Mental State Examination, clock drawing test), and resident depression assessment (15-item Geriatric Depression Scale). Diagnosis of PDD was defined using existing literature and described below. Data were analyzed using SPSS version 15.
  
  
  RESULTS
  Of the 714 nursing home residents, 55 (7.7%) met criteria for PD. Of these, 37 participated in the study and 18 (48.6%) met criteria for PDD. None were diagnosed with PDD in the charts and 11.1% (2 of 18) were on FDA-approved treatment.
  
  
  CONCLUSIONS
  In this sample of nursing home residents, the prevalence of PD was 7.7% and the overall prevalence of PDD was 3.7%. PDD remains an unrecognized entity in the nursing home setting. Close to half (48.65%) of nursing home residents with PD may have PDD at any given time and they remain undiagnosed and largely undertreated.
authors.affiliation: Saint Louis University School of Medicine, Saint Louis, Missouri. Electronic address: mhoegh@slu.edu.
authors.forename: Matthew
authors.initials: M
authors.lastname: Hoegh
authors.forename: Aalamgeer K
authors.initials: AK
authors.lastname: Ibrahim
authors.forename: John
authors.initials: J
authors.lastname: Chibnall
authors.forename: Beenish
authors.initials: B
authors.lastname: Zaidi
authors.forename: George T
authors.initials: GT
authors.lastname: Grossberg
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003072:Cognition Disorders / Q000150:complications / Q000453:epidemiology; D003704:Dementia / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology*; D003866:Depressive Disorder / Q000150:complications / Q000453:epidemiology; D004363:Drug Utilization / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008923:Missouri / Q000453:epidemiology; D009483:Neuropsychological Tests; D009735:Nursing Homes; D010300:Parkinson Disease / Q000150:complications* / Q000453:epidemiology*; D015995:Prevalence