Question
SCENARIO--- ACME, a manufacturing company in Morgan County, Georgia, hosted its annual company picnic on May 5, 2012. Friends and family members of employees were
SCENARIO---
ACME, a manufacturing company in Morgan County, Georgia, hosted its annual company picnic on May 5, 2012. Friends and family members of employees were also invited. Between 250 and 300 people attended the event.
Because the event had many attendees, food was served at two different times (noon and 2:00 p.m.) to give the shop ample opportunity to make all the dishes.
Over the days following the picnic, the county health department became inundated with calls and faxed lab reports of several culture-confirmed Salmonella enteritidis cases. Most cases were associated with the ACME company picnic held on May 5. Because there was a sudden increase in Salmonella cases over the weekend, an investigation into a potential outbreak was conducted. A roster of attendees at the picnic was obtained and each person was contacted. A case was defined as any attendee who attended the ACME company picnic and developed diarrhea, abdominal cramps, and/or fever after 72 hours of the picnic. A total of at least 90 cases met the criteria.
QUESTIONS
1.Conduct logistic regression analysis to determine whether age was positively associated with the Salmonella outbreak. Provide the Risk Ratio (RR), Odds Ratio (OR), Confidence Intervals (CI), corrected Chi Square, and corrected p-values generated from your analysis and discuss whether any age group was positively associated with the Salmonella outbreak. Use p-value (? 0.05).
2.Conduct a logistic regression (outcome variable = ill) and (independent variable = foods eaten at the picnic). Which were the top three foods with the highest odds ratio associated with becoming ill?
a.Provide the Odds Ratio (OR), Confidence Intervals (CI), and p-values generated from your analysis of these foods. Use p-value (? 0.05).
b.Interpret your findings from item 2a above.
c.From the data analysis results, discuss whether any foods were positively associated with the Salmonella outbreak at the ACME company picnic.
***CHART FOR QUESTION 1
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