Researchers investigated whether the likelihood of having covid-19 was decreased if someone had ever had malaria. There were a total of 1700 people in the study. The number of those with covid-19 was 689. Among those who reported ever having malaria, 139 had covid-19 and 58 did not.

1. What is the exposure of interest? 
2. Construct a 2 x 2 table to present the data. Put your table below before question c). 
3. Calculate the odds ratio. 
4. Provide an interpretation of the odds ratio. 

Answer rating: 100% (QA)

a Exposure refers to any characteristic that may explain or predict the presence of a study outcome ... View the full answer