RTC/OM HCBS Measurement Education Modules
Cross-sectional and Longitudinal Measurement
Cross-sectional measurement obtains information at a single time (a 'snapshot') across different people.
Example: to determine how people with disabilities rate the quality of their services at a given time. For example, January 21st.
Longitudinal measurement obtains information from the same people at multiple points or times to measure change.
Example: to determine how the quality of services for a group of people with disabilities change over a 5-year period.