Are men at greater risk for Parkinson's disease than women?
Level 3 - non-randomized controlled study
Meta-analysis of observational cohort/incidence studies
PubMed 15026515 · doi:10.1136/jnnp.2003.020982
What was done
A meta-analysis of population-based incidence studies investigating sex differences in Parkinson's disease risk across various populations globally. Seven studies met the inclusion criteria.
What was found
Men had a significantly higher incidence rate of Parkinson's disease than women, with a relative risk 1.5 times greater in men. Specific confidence intervals, exact p-values, and total patient counts were not reported in the abstract.
Why it matters
This meta-analysis demonstrates that the male predominance in Parkinson's disease is present in prospective incidence data and is not merely an artifact of mortality or prevalence differences.
Limits
Only seven studies met the inclusion criteria. The abstract omits confidence intervals, measures of heterogeneity, and absolute incidence rates, and cannot determine the causal mechanisms behind the observed sex disparity.
Cited by
- partial Men are twice as likely as women to develop Parkinson's disease.