Which of the following best describes a cross-sectional design?
a. Researchers recruit one group of children the same age and track them for 2 years over time.
b. Researchers recruit three groups: first graders, second graders, and third graders. They follow them for 6 months.
c. Researchers recruit three groups: first graders, second graders, and third graders, and each participant participates in one session of an experiment.
d. Researchers study six children over a period of three weeks and observe their behaviors twice a day.
Answer: c. Researchers recruit three groups: first graders, second graders, and third graders, and each participant participates in one session of an experiment.
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What is the median of the distribution?
15, 29, 20, 14, 20, 30, 49, 20, 63 What will be an ideal response?
A Mental Status Exam is based on:
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The Patient Protection and Affordable Care Act (ACA) of 2010 includes:
A) ?expansion of funds for primary care clinics in medically underserved areas B) ?prevention of abuses by private insurance companies C) ?utilization of evidence-based medicine D) ?all of the above