Which of the Following Statements Is Not an Accurate Description

question 4

Multiple Choice

Which of the following statements is not an accurate description of epidemiologic studies using large group data such as National Hospital Discharge Survey or National Health Interview Survey?

• A) The advantage of using large data sets is that the data refer to real-world populations; the issue of representativeness is minimized.
• B) Because the data sets exist at the time the research is initiated, analysis can be completed and results generated relatively rapidly.
• C) Given the large data sets used, sample size is usually considered a major problem.
• D) Data are usually gathered for fiscal and administrative purposes; they may not be well suited for scientific research.
• E) When necessary variables or questions are absent, the investigators may consciously or subconsciously change the research questions.