A school nurse examined a population of 1,000 children in an attempt to detect nearsightedness. The prevalence of myopia in this population is known to be 15%. The sensitivity of the examination is 60% & its specificity is 80%. All children labeled as “positive” (i.e., suspected of having myopia) by the school nurse are sent for examination by an optometrist. The sensitivity of the optometrist’s examination is 98% & its specificity is 90%. What would be the positive predictive value (PPV)...

An outbreak of gastroenteritis occurred at a boarding school with a student enrollment of 846. Fifty seven students reported symptoms including vomiting, diarrhea, nausea, & low-grade fever between 10 p.m. on September 24 & 8 p.m. on September 25. The ill students lived in dormitories that housed 723 of the students. The table below provides information on the number of students per type of residence & the number reporting illnesses consistent with the described symptoms & onset time. Which p...

NR 503 NR 503 EPIDEMIOLOGY FINAL STUDY GUIDE V1

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NR 503 EPIDEMIOLOGY MIDTERM QUESTIONS &ANSWERS 2023

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NR 503 Week 8 Discussion - Health Policy and Ethics

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NR 503 Midterm Study Guide 2023 Predictor

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