Cross-Sectional Studies

**Definition:** 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.

**Tree numbers:** - E05.318.372.500.875 - N05.715.360.330.500.875 - N06.850.520.450.500.875

**Synonyms:** - Cross-Sectional Survey - Surveys, Disease Frequency - Disease Frequency Surveys - Analysis, Cross-Sectional - Cross Sectional Analysis