《英文msh词典》Analyses,Cross-Sectional
[入口词] Analyses,Cross-Sectional
[主题词] Cross-Sectional Studies
[英文释义] Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.