please show all steps to answer An epidemiologic investigation begun on January

Question

please show all steps to answer

An epidemiologic investigation begun on January 1st, 2009 identified a population of 1,000 individuals among whom 4 were found to have the disease under study on this date. During the year of the study, 6 additional new cases were found. Among the total of 10 cases, there were 6 deaths during the year. For the 10 cases, the diagram indicates the time of case recognition, periods of observation during the study, and vital status at the time of the termination of observation. A vertical bar at the start of the diagram (patients 1,2,3,4) indicates that the start of disease had occurred before the study began. Assume that the 990 remaining individuals in the study did not become ill or die during the year of observation. What is the incidence density of the disease for 2009 (per 100,000)? 2009 2010 6 7 9 10 l-lllness Prior to study-= lllness-= Illness Death 50 4.5 0 5 0 49

Explanation / Answer

Answer:

Incidence Density = new cases over stated period / Number of person-months of observation

For the given data:

Case no. Time (months) 1 12 2 6 3 9 4 1 5 11 6 3 7 9 8 2 9 7 10 4 Total 64

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.