Assignment Task:
Hypothetical - Performing Calculations - Study Period - Nursing Assignment Help 

QUESTION 1:
At the beginning of 2010 (baseline), a group of 4,125 male prisoners within the Queensland prison system were screened for Hepatitis C Virus (HCV). 936 of these men were found to test positive for HCV when tested at baseline (2010). All these men were followed-up over a period of 3 years. At the end of the 3 years of follow-up (2013), men who did not test positive for HCV in 2010 were re-screened for the virus (assume that once someone
contracts HCV, they continue to have the virus for the duration of the follow-up). A further 211 cases of HCV were identified during the 3 year period (either diagnosed during the interim or diagnosed during the study assessment).
. a)  What was the prevalence of HCV among male prisoners in 2010?
. b)  What was the prevalence of HCV among study participants after 3 years of follow- ?up? Assume no loss to follow-up. 
. c)  What was the cumulative incidence of HCV among the male prisoners over the study ?period? [2 marks] ?
. d)  Calculate the total number of person-years at risk during the 3 year period. (Assume that HCV was acquired randomly during the 3 year period. That is, those who acquired HCV were at risk for half the time of those who did not acquire HCV).
. e)  What was the incident rate of HCV among participants for the 3 years? [3 marks] ?
. f)  Assuming that the incidence rate of HCV remains constant, what should happen to the prevalence of HCV in this cohort over time? Please justify your answer.

 

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  • Posted on : December 26th, 2018
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