Question 5 (part 2) · LDEK · Characteristics of scientific studies
The populations of two districts of a city were selected for a study. A fluoridation program was carried out among the inhabitants of one of the districts over a period of six months, and these actions were abandoned in the other district. After the indicated period of time, the results were compared in both groups. The above description provides an example of:
- A. ecological study.
- B. cross-sectional study.
- C. case-control study.
- D. cohort study.
- E. field study.
Hint
Note that the investigators actively introduce an intervention in a whole community of healthy people and compare it with another community.
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