[Verified Answer]: LogoResearch on AgingVolume 35, Issue 4, July…

LogoResearch on AgingVolume 35, Issue 4, July 2013, Pages 437-458© The Author(s) 2012, Article Reuse Guidelineshttps://doi.org/10.1177/0164027512446941ArticleCirculatory Diseases in the U.S. Elderly in the Linked National Long-Term Care Survey-Medicare Database: Population-Based Analysis of Incidence, Comorbidity, and DisabilityIgor Akushevich1, Julia Kravchenko2, Svetlana Ukraintseva1,2, Konstantin Arbeev1, and Anatoli I. Yashin1,2AbstractIncidence rates of acute coronary heart disease (ACHD; including myocardial infarction and angina pectoris), stroke, and heart failure (HF) were studied for their age, disability, and comorbidity patterns in the U.S. elderly population using the National Long Term Care Survey (NLTCS) data linked to Medicare records for 19912005. Incidence rates increased with age with a decrease in the oldest old (stroke and HF) or were stable at all ages (ACHD). For all diseases, incidence rates were lower among institutionalized individuals and higher in individuals with higher comorbidity indices. The results could be used for understanding currently debated effects of biomedical research, screening, and therapeutic innovations on changes in disease incidence with advancing age as well as for projecting future Medicare costs.KeywordsMedicare data, incidence rates, circulatory diseases, age pattern, disability, comorbidity, elderly What is dependent and independent variables?