Incidence and mortality trends of aspiration pneumonia in Parkinson's disease in the United States, 1979-2010.

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Incidence and mortality trends of aspiration pneumonia in Parkinson's disease in the United States, 1979-2010.

Parkinsonism Relat Disord. 2015 Sep;21(9):1082-6

Authors: Akbar U, Dham B, He Y, Hack N, Wu S, Troche M, Tighe P, Nelson E, Friedman JH, Okun MS

Abstract
INTRODUCTION: Careful examination of long-term analyses and trends is essential in understanding the medico-economic burden of this common complication. We sought to describe the long-term (32-year) trends of incidence and mortality in PD patients hospitalized with aspiration pneumonia (AsPNA).
METHODS: Incidence and mortality of AsPNA in hospitalized PD versus non-PD patients was assessed by logistic regression analysis applied to a national database between the years 1979 and 2010. Covariates such as age-decennium, gender, year AsPNA occurred, and the interactions with PD diagnosis were investigated. Rate of AsPNA and mortality over the 32-years was trended and compared.
RESULTS: AsPNA occurred in 3.6% of PD patients and 1.0% of non-PD patients. The average mortality for PD patients was less (17% vs. 22%). Long-term (32-year) trends revealed a nearly 10-fold increase in incidence of AsPNA in PD (0.4% in 1979, 4.9% in 2010), decreasing mortality overtime, higher likelihood in males, and increasing average age of AsPNA patients (steeper increase in PD). All p-values<0.05. In regression analysis, each successive year had a slight increase in odds of AsPNA (OR 1.03 in PD, OR1.06 in non-PD).
CONCLUSIONS: Trends over 32 years revealed a 10-fold increase in AsPNA among PD and non-PD patients, and an associated decrease in mortality. Our data suggest that PD patients are living longer, have slightly more AsPNA, but a lower mortality than was seen in past decades. Further research should investigate the causes of AsPNA in PD, and also potential interventions to decrease its occurrence.

PMID: 26154915 [PubMed - indexed for MEDLINE]

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