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Epidemiologist

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AVG. SALARY

$72,220

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EDUCATION

Master's degree

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JOB OUTLOOK

Increasing

Real-Life Activities

Real-Life Math -- Solution

1. Calculate the OR and 95% CI for the relation between prior exposure to OTC anti-inflammatory medicines and development of acne.

OR (95% CI) = 3 (1.90-4.75)

2. What do you conclude about whether or not there is an association based on this OR value?

The odds of having used OTC anti-inflammatory medicines for at least 10 days in the past two months were three times higher in kids with acne than in kids without acne. This suggests an association between the use of these drugs and the development of acne. Further work would be needed to determine if the drugs actually caused the acne.

3. Is this a statistically significant result?

Yes, it is statistically significant at the p=.05 level because the 95% CI does not include the value 1.0.


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