HLTB15H3 Chapter 9: Cross-Sectional Surveys
Document Summary
Goal: to measures the proportion of a population with a particular exposure or disease. Provides a snapshot of the health status of a pop. at one point in time. Should be made over a short period of time based on a representative sample of a pop. **one of the most common study designs used in epidemiology. The one important requirement:the participants must be reasonably representative of some larger population. Knowledge ; attitudes (or beliefs or perceptions); and practices (or behaviors). Kap is a commonly used type of cross-sectional study. A repeated cross-sectional study resamples and resurveys representatives from the same source population at two or more different time points. This type of study does not track the same individuals forward in time. A new set of participants is sampled from the source population each time a survey is conducted. Repeated cross-sectional surveys can reveal trends in pop. -level metrics over time but do not allow for the examination of individual-level changes.
