INCIDENCE OF DEMENTIA IN PARKINSON'S DISEASE: THE PINE STUDY. Issue 10 (9th September 2014)

• Record Type: Journal Article
• Authors: Giuntoli, Cinzia; Forbes, Hazel; Counsell, Carl
• Is Part Of: Journal of neurology, neurosurgery and psychiatry. Volume 85:Issue 10(2014)
• Page Start: e4
• Page End: e4
• Publication Date: 2014-09-09
• Subjects: EPILEPSY; Neurology -- Periodicals; Nervous system -- Surgery -- Periodicals; Psychiatry -- Periodicals; 616.8
• DOI: 10.1136/jnnp-2014-309236.22
• Languages: English
• ISSNs: 0022-3050

Abstract

Abstract : Background: There are few data on the incidence of dementia from prospective follow-up of community-based incident Parkinson's disease (PD) cohorts and none with a concurrent control group. Methods: The PINE study prospectively identified 206 incident PD patients in Aberdeen along with 184 age-gender matched, community-based controls. 195 patients and 184 controls gave consent for standardised annual lifelong follow-up. All research files and primary and secondary care records were reviewed to identify those who developed dementia defined by: (1) DSM-IV based clinical diagnosis by an expert neurologist/psychiatrist; (2) the Movement Disorder Society criteria for PD dementia. Incidence rates and hazard ratios (HR) were calculated and baseline predictors of dementia identified. Results: After median follow-up of five years, the incidence of DSM-IV dementia was 58.3 per 1000 person-years versus 10.7 cases per 1000 person-years in controls (median time to dementia in PD 8.5 yrs, adjusted HR 6.4, 95% CI 3.1–13.5). The MDS criteria for dementia were highly specific (99%) but not sensitive (67%). The following were independent baseline predictors of PD dementia: older age at diagnosis, self-reported cognitive impairment, lower MMSE score and lack of tremor. Conclusion: People with PD are about six times more likely to develop dementia than matched controls.