On watching this video, students should be able to: Confirm that that aspects of good study design include defining the research question ... representativeness or ensures that the population and ...

Ohio is the seventh most populous state, but its population is projected to decline by nearly 6% over the next 30 years. The population composition of the state is shifting older: by 2030, more than 1 ...

The increasing diversity of population of the United States presents ... and retention strategies for maximizing the sample sizes of small groups in intervention and research studies; epidemiological ...