Nineteen percent of the patients had suffered a tear in an artery, most often in the carotid (neck) artery, and 17 percent had suffered an aneurysm (a bulge in an artery), most often in the renal (kidney) artery, the study authors reported in a symposium news release.
and analyzed with no less care than studies intended to examine risk-fac-tor associations with cancer. If proper care is not taken, descriptive studies will divert scientific resources, especially public health department resources, away from more productive activities. Descriptive epidemiology studies can also be used to evaluate cancer
Analytical epidemiological study â is a quantitative, comparative study investigating the relationship between a study factor and an outcome. Analytical studies often assess the effect of potential causes of disease, pathogenic mechanisms, risk factors, prognostic factors, or remedial therapies.