Limitations on epidemiologic studies include the following:
1. failure to control experimental group for other known carcinogens
2. insufficient observation periods which permit full demonstration of cancers with long latent periods
3. using improper control groups
4. deficient or incorrect health records

Question

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Epidemiologic studies face several limitations, including failure to control for other known carcinogens, insufficient observation periods for cancers with long latent periods, using improper control groups, and relying on deficient or incorrect health records. These factors can compromise the validity and reliability of study findings.

Limitations on Epidemiologic Studies Include the Following