Question

What are the three main things to focus on to ensure cohort studies are valid?

1) Selection bias, confounding, and measurement bias
2) Randomization, blinding, and placebo control
3) Sample size, statistical power, and p-value
4) Validity, reliability, and generalizability

Answer 1

The validity of cohort studies can be improved by focusing on minimizing selection bias, confounding, and measurement bias through a representative sample, careful study design, and accurate data collection.

Step-by-step explanation:

The three main things to focus on to ensure cohort studies are valid include selection bias, confounding, and measurement bias. To minimize the risk of selection bias, researchers should aim for a representative sample of the population of interest. Confounding can be addressed through careful study design and statistical control. Measurement bias must be minimized by ensuring the accurate and consistent collection of data across study participants. Thus, the successful execution of these measures can substantially improve the validity of a cohort study.