What was the cumulative incidence of HSV infections over the four year period? E

Question

What was the cumulative incidence of HSV infections over the four year period? Express your answer per 1 000 people.

Consider the following information and data to answer the questions that follow A study was done to investigate the occurrence of cold sores, caused by HSV, among cigarette smokers as compared to E-cigarette users. The study was performed over a 4 year period among 1000 cigarette smokers and 2000 E-cigarette users. At the beginning of the study each individual was screened to verify the presence of latent HSV, an incurable infection. Total cases Year of E-cigarette study Cigarette 20 30 2 105 40

Explanation / Answer

The cumulative incidence of HSV infections over the four year period expressed per 1 000 people is:

Cigarette:

= 20+ 40+ 45+ 100

= 205

ECigarette:

= 30+105+140+210

= 485

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