phuluong2k
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40 nurses who report needle stick during the first year of the employment compared with 40 nurses who does not report needle sticks during their first year
The school of all 80 nurse was contacted and asked question about formal universal precautions training as a part of the curriculum
Needle stick No needle stick
Training 19 34
No Training 21 6
Total 40 40
The relative chance of a newly hired nurse experiencing a needle stick injury in the first year of employment based on whether nurse had received formal training or not
A. (19/40)/(34/40)
B. (19/34)/ (21/6)
C. (21x34)/ (6x19)
D. (6x19)/ (21/34)
E. (21x6) / (19x34)
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| mjl1717
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b?
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Smell the coffee! "Is That an Osler move??"
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| phuluong2k
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It is C, ad/bc formula in retrospective study
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| xiangbc5
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I think it is better to choose D than C for training will get fewer sticks.
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| phuluong2k
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You have the reason, there is a little confusion between C & D
but C is the answer in Kaplan, they calculate the relative chance of not training
a box at the the needle stick ( as disease) and not training ( as risk, positive test ) so it is 21 :arrow: d is 34
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