Differential Geographical Risk of Initial Pseudomonas aeruginosa Acquisition in Young US Children With Cystic Fibrosis.
| Autor: | Psoter, Kevin J., Rosenfeld, Margaret, De Roos, Anneclaire J., Mayer, Jonathan D., Wakefield, Jon |
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| Předmět: |
PSEUDOMONAS diseases
CHI-squared test CLIMATOLOGY CONFIDENCE intervals CULTURES (Biology) CYSTIC fibrosis REPORTING of diseases MAPS POPULATION geography REGRESSION analysis RELATIVE medical risk DISEASE prevalence PROPORTIONAL hazards models RETROSPECTIVE studies STATISTICAL models DESCRIPTIVE statistics DISEASE complications DISEASE risk factors INFECTIOUS disease transmission |
| Zdroj: | American Journal of Epidemiology; Jun2014, Vol. 179 Issue 12, p1503-1513, 11p |
| Abstrakt: | Pseudomonas aeruginosa is the sentinel respiratory pathogen in cystic fibrosis patients. We conducted a retrospective study to examine whether state of residence affected risk of P. aeruginosa acquisition among US children under 6 years of age with cystic fibrosis by using data from the Cystic Fibrosis Foundation National Patient Registry, 2003–2009. The outcome was time to first isolation of P. aeruginosa from a respiratory culture. We used a Bayesian hierarchical Weibull regression model with interval-censored outcomes. Spatial random effects, included at the state level and modeled using an intrinsic conditional autoregressive prior, allowed estimation of the residual spatial correlation. The regression portion of the model was adjusted for demographic and disease characteristics potentially affecting P. aeruginosa acquisition. A total of 3,608 children met the inclusion criteria and were followed for an average of 2.1 (standard deviation, 1.6) years. P. aeruginosa was cultured in 1,714 (48%) subjects. There was a moderately elevated spatial residual relative risk. An estimated 95% credible interval for the residual hazard ratio under 1 of the fitted models was 0.64–1.57; the strongest positive association was observed in the Southern states. The fact that risk for P. aeruginosa acquisition displayed spatial dependence suggests that regional factors, such as climate, may play an important role in P. aeruginosa acquisition. [ABSTRACT FROM PUBLISHER] |
| Databáze: | Complementary Index |
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