Treatment effects are best estimated using data from
A)randomized,controlled experiments.
B)subjects that have already undergone the risky treatment.
C)people most in need of the treatments.
D)natural or quasi-experiments.

Question

Quizplus · Accepted Answer

Randomized, controlled experiments are the gold standard for estimating treatment effects because they allow for random assignment of participants to treatment and control groups, which decreases the likelihood of confounding variables affecting the results. This approach also allows for blinding of researchers and participants to reduce bias. The other options such as using subjects that have already undergone treatment or only studying the people most in need of treatment may introduce selection bias, and natural or quasi-experiments often lack random assignment and may suffer from confounding variables.

Treatment Effects Are Best Estimated Using Data from