Self-reported Diagnosis of Parkinson's Disease in the UK Elderly
Author Information
Author(s): Thomas Foltynie, Fiona E Matthews, Lianna Ishihara, Carol Brayne
Primary Institution: MRC CFAS
Hypothesis
Can self-reported diagnosis of Parkinson's disease provide reliable estimates of its incidence and prevalence among the elderly in the UK?
Conclusion
Self-reporting of Parkinson's disease status can be used as a screening tool, but it identifies a diverse group of movement disorder patients.
Supporting Evidence
- The self-reported prevalence of Parkinson's disease increases with age.
- Only 40% of deceased individuals with self-reported PD had it recorded on their death certificates.
- Neuropathological examination confirmed typical PD changes in only 40% of those who self-reported PD.
Takeaway
Older people in the UK sometimes say they have Parkinson's disease, but not everyone who says so actually has it. This study helps us understand how many really do.
Methodology
The study used a population-based random sample of elderly individuals who were asked about their Parkinson's disease diagnosis at baseline and after two years.
Potential Biases
Self-reporting may lead to underestimation or overestimation of Parkinson's disease prevalence due to misdiagnosis or missed cases.
Limitations
The study relied on self-reported data, which may not accurately reflect true diagnoses, and there were significant follow-up losses.
Participant Demographics
Participants were individuals over the age of 65 from five centers in the UK.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI 0.5–0.9
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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