A case-control study is a type of medical research investigation often used to help determine the cause of a disease, particularly when investigating a disease outbreak or rare condition. If public ...

In a nationally representative sample of 1.1 million homes, we compared the prevalence of smoking among 33,000 deceased women and 41,000 deceased men (case subjects) with the prevalence of smoking ...

Length of stay outliers are associated with hospital-acquired infections, complications, and discharge to facility, as opposed to nonmodifiable risk factors like age and comorbidities. Objectives: ...

Substantial molecular evidence suggests a role for human papillomavirus (HPV) in the pathogenesis of oropharyngeal squamous-cell carcinoma, but epidemiologic data have been inconsistent. A high ...

Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands Background: In spite of the benefits of physical activity, exercise may provoke acute ...

Epidemiology and Infection, Vol. 128, No. 3 (Jun., 2002), pp. 419-431 (13 pages) Few studies have assessed risk factors for sporadic cryptosporidiosis in industrialized countries, even though it may ...

We consider a problem of testing mixture proportions using two-sample data, one from group one and the other from a mixture of groups one and two with unknown proportion, λ, for being in group two.