Question
You conduct a survey of current exposure to organochlorine pesticides and pregnancy status among 500 fertility patients at a fertility center following them from 2015-2017.Half
You conduct a survey of current exposure to organochlorine pesticides and pregnancy status among 500 fertility patients at a fertility center following them from 2015-2017.Half of those patients are pregnant at the time of survey.Of those who are pregnant, 10% reported using OCPs in their gardens in the last year while they were trying to conceive. Among those who are not pregnant at the time of survey, 50% reported using OCPs in their gardens in the last year while they were trying to conceive.Assume minimal loss to follow-up and no competing risks.
- Draw a 2x2 table based on the description above. Identify and label the exposure and the outcome. Be sure to include any appropriate totals based on the respective study design.
- What absolute measure of association can you calculate based on the description above?
- Calculate the absolute measure of association identified above.
- Calculate the 95% confidence interval for the absolute measure of association you identified above.
- Interpret your absolute measure of association (remember to include magnitude, and units if necessary) and confidence interval. Be sure to compare to the null value.
- What relative measure of association can you calculate?
- Calculate the relative measure of association identified above.
- Calculate the 95% confidence interval for the relative measure of association you identified above.
- Interpret your relative measure of association (remember to include magnitude and units if necessary) and confidence interval. Be sure to compare to the null value.
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