The type of study that is used in assessing nutritional habits,disease trends,and other health phenomena of large populations,and determining factors that influence those phenomena,is called a(n):
A)case controlled study.
B)clinical trial.
C)observational study.
D)animal study.

Question

Quizplus · Accepted Answer

The type of study that is used in assessing nutritional habits, disease trends, and other health phenomena of large populations and determining factors that influence those phenomena is called an observational study. Observational studies include cohort studies, case-control studies, and cross-sectional studies. Clinical trials are designed to test the effectiveness of new treatments or interventions, while animal studies are used to test the safety and efficacy of new drugs or treatments before they are tested in humans.

The Type of Study That Is Used in Assessing Nutritional