cohort studies C화학적 특성, 용도, 생산
개요
In contrast with case-control studies, cohort studies
evaluate the frequency of illness in a group following
an identified exposure compared to the frequency of
illness in a group of unexposed controls. A Cohort study
layout shown in Table 4. In contrast with a case-control
study (which allows evaluation of multiple exposures
possibly linked to a given disease), the cohort study
allows evaluation of multiple disease outcomes for a
single exposure.
Common measures of illness used in cohort studies of
chronic disease are cancer incidence and cause-specific
mortality. The majority of chronic disease studies employ
mortality as the primary study outcome, but the incidence
data are preferrable when available. For cancers with a
low survival rate, such as lung cancer, the 2 outcomes
may be roughly equivalent. For other cancers, such as
prostate cancer or breast cancer, mortality may more
strongly reflect access to medical care than disease incidence.
cohort studies 준비 용품 및 원자재
원자재
준비 용품
