Module 2 – SLP
DESCRIPTIVE AND ANALYTIC EPIDEMIOLOGY
Designing an Epidemiologic Study to Test the Hypothesis
To test the hypothesis on the source of the outbreak, a case-control study was conducted from July 21-27. Thirty-one of the initial 38 persons meeting the original case definition (i.e., those not used in hypothesis-generating interviews) were included as cases. It was decided that two controls would be selected for every case and would be matched to the case by age group (0-<2 years, 2-<5 years, 5-<12 years, 12-<18 years, 18-<60 years, and 60+ years) and gender.
The investigators identified controls for the study using sequential digit dialing. Exposure information among cases was collected for the 7 days before onset of illness. For controls, exposure information was collected for the 7 days before the interview and for the 7 days before the onset of illness in the matching case.
Twenty-seven case-control sets were interviewed; the remaining case-patients could not be reached.
Session Long Project
Please answer these questions:
- How would you define controls for this study? What methods might be used to identify controls?
- Do you agree with the investigators’ decision to match on age group and gender? Why or why not?
- Over what time period would you examine exposures to possible risk factors for cases? For controls?
SLP Assignment Expectations
Length: SLP assignments should be at least 4 pages (1000 words) in length.
Assessment and Grading: Your paper will be assessed based on the performance assessment rubric that is linked within the course. Review it before you begin working on the assignment. Your work should adhere to these MSHS Assignment Expectations.