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 ...

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 ...

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: ...

In this case-control study, incomplete pertussis vaccination was a significant risk factor for developing pertussis among school children. Receiving the fifth dose at 4 years of age was associated ...

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 ...

The association of a candidate gene with disease can be efficiently evaluated by a case-control study in which allele frequencies are compared for diseased cases and unaffected controls. However, when ...

Like cohort studies, the purpose of case-control studies is to establish association between exposure to risk factors and disease. Unlike cohort studies, however, members of the population with the ...