Cross-sectional

/krɒs ˈsɛk.ʃən.əl/ adjective

Definition

A research design that compares different groups of participants at a single point in time rather than following them over time.

Etymology

From 'cross' (across) + 'section' (from Latin 'sectio,' a cutting). A cross-cut snapshot of multiple groups.

Kelly Says

A cross-sectional study takes a snapshot of different groups at ONE moment in time — faster than longitudinal but can't tell you about change over time.

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