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One thousand men who were working in factory X were screened for HIV on January 1st 2010 and 50 of them were found to be positive for HIV antibodies. The screening was repeated in the same 1000 men on January 1st 2011 and this time 62 men were positive, including the 50 men who were positive on the first screening. Assuming that no one had died or was lost to follow-up, prevalence on January 1st 2010 was: OA point prevalence = 6.2% OB fetime prevalence = 6.2% OC. period prevalence = 5%. D. point prevalence = 5%. OE point prevalence = 1.26%

One thousand men who were working in factory X were screened for HIV on January 1st 2010 and 50 of them were found to be positive for HIV antibodies. The screening was repeated in the same 1000 men on January 1st 2011 and this time 62 men were positive, including the 50 men who were positive on the first screening. Assuming that no one had died or was lost to follow-up, prevalence on January 1st 2010 was: OA point prevalence = 6.2% OB fetime prevalence = 6.2% OC. period prevalence = 5%. D. point prevalence = 5%. OE point prevalence = 1.26%

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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One thousand men who were working in factory X were screened for HIV on January 1st 2010 and 50 of them were found to be positive for HIV antibodies. The screening was repeated in the same 1000 men on January 1st 2011 and this time 62 men were positive, including the 50 men who were positive on the first screening. Assuming that no one had died or was lost to follow-up, prevalence on January 1st 2010 was: A point prevalence = 6.2%. OB lifetime prevalence = 6.2%. OC. period prevalence = 5%. D. point prevalence = 5%. O E. point prevalence = 1.26%.
Transcribed Image Text:One thousand men who were working in factory X were screened for HIV on January 1st 2010 and 50 of them were found to be positive for HIV antibodies. The screening was repeated in the same 1000 men on January 1st 2011 and this time 62 men were positive, including the 50 men who were positive on the first screening. Assuming that no one had died or was lost to follow-up, prevalence on January 1st 2010 was: A point prevalence = 6.2%. OB lifetime prevalence = 6.2%. OC. period prevalence = 5%. D. point prevalence = 5%. O E. point prevalence = 1.26%.
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