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Table 2 Mortality for Parkinsons disease as the underlying cause of death in two groups of specialized doctors (anesthetists e internists) from 1979 to 1995

From: Exposure to anesthetic gases and Parkinson’s disease: a case report

Length of follow up Anesthetists Internists Comparison Anesthetists vs Internists
SMR CI SMR CI RR
All periods 1.33 0.75–21.5 1.03 0.61–1.59 1.29
≤ 10 years 0.60 0.15–1.57 1.78 0.89–3.12 0.34
> 10 years 2.22 1.15–3.80 0.64 0.27–1.24 3.47