Question

1. _____, or _____, are controlled studies where some type of experiment is used to determine its impact on certain health parameters.

○ clinical trials, case - control studies
○ clinical trials, intervention studies
○ case - control studies, small - scale epidemiological studies
○ case - control studies, intervention studies

1. in many studies, the placebo effect can be nearly as effective as the medication itself.

○ true
○ false

Explanation:

Question 16

Clinical trials and intervention studies are controlled studies with an experiment to test impact on health. Case - control studies are observational (not experimental), so options with case - control are incorrect. Small - scale epidemiological studies are also observational. So the correct pair is Clinical trials and intervention studies.

Numerous studies have shown that the placebo effect can have a significant impact, often being nearly as effective as the actual medication in some cases, especially for conditions with a strong psychological component like pain or some mental health issues.

Answer:

B. Clinical trials, intervention studies

Question 17