The incidence of cancer in people living within 100 yards of overhead power lines is recorded. This would be an example of what type of epidemiological technique?
A) ecological study
B) cross-sectional survey
C) cohort study
D) correlational experiment

Question

Quizplus · Accepted Answer

This is an ecological study, as the data is being collected based on the population living in a certain geographic location, rather than following specific individuals over time (cohort study) or collecting data at one point in time (cross-sectional survey). It is also not a correlational experiment, as there is no manipulation of variables.

The Incidence of Cancer in People Living Within 100 Yards