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66 results
  • One-Step Generalized Estimating Equations with Large Cluster Sizes. [Journal Article]
    J Comput Graph Stat 2017; 26(3):734-737Lipsitz S, Fitzmaurice G, … Nguyen LL
  • Medical studies increasingly involve a large sample of independent clusters, where the cluster sizes are also large. Our motivating example from the 2010 Nationwide Inpatient Sample (NIS) has 8,001,068 patients and 1049 clusters, with average cluster size of 7627. Consistent parameter estimates can be obtained naively assuming independence, which are inefficient when the intra-cluster correlation…
  • National Trends in Admission for Aspiration Pneumonia in the United States, 2002-2012. [Journal Article]
    Neurosurg Focus 2017; 14(6):874-879Menger RP, Kalakoti P, … Sin A
  • CONCLUSIONS: The incidence and mortality of patients admitted to acute care hospitals for aspiration pneumonia decreased between 2002 and 2012 in the United States. This difference was more evident for elderly patients. However, the cost of hospitalization almost doubled. Being older than 65 years of age is an independent predictor of in-hospital mortality among patients admitted for aspiration pneumonia. Strategies to prevent aspiration pneumonia in the community should be implemented in the aging U.S.
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