Welcome to Disease Detectives B/C 2015! I'll start the questions...
What is the difference between cohort and case-control studies?
Disease Detectives B/C
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hmath729
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Disease Detectives B/C
Last edited by hmath729 on Wed Dec 17, 2014 4:02 pm, edited 1 time in total.
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bernard
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Re: Disease Detectives B
For a case-control study, participants are selected on a basis of [i]whether or not they have the disease[/i]; then, they are compared for common exposures to determine if an association exists. For a cohort study, participants are selected on a basis of [i]exposure or no exposure[/i]; then, disease occurrence is compared to determine if an association exists. Choosing a study type depends on what you already know. If there are 3 students who at school lunch last week and 100 cases of salmonella are reported, a case-control would be best because for those 100 cases, you can determine exposure to school lunch (Y/N) and look for an association.
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hmath729
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Re: Disease Detectives B
Yep, your turn!
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bernard
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Re: Disease Detectives B
Give two examples of each: 1) vectors, 2) fomites, 3) zoonotic diseases.
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hmath729
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Re: Disease Detectives B
ticks, mosquitoes
Comb, headphones
Lyme disease, salmonellosis
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bernard
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Re: Disease Detectives B
Correct, your turn!
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hmath729
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Re: Disease Detectives B
(I can't think of anything else right now...)
Bob shared his headphones with Joe. Bob then used them again. The next day, Bob was diagnosed with head lice. The headphones are an example of...
Bob shared his headphones with Joe. Bob then used them again. The next day, Bob was diagnosed with head lice. The headphones are an example of...
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"You don't beat the tests. The tests beat you!"
Medals (10 total) Inv./Reg./State
2016
Anat. -/4th/-
BPL 1st!/1st!/-
DD. -(9th)/1st!/-
2015
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BPL 2nd!/5th/-
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2014
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bernard
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Re: Disease Detectives B
A fomite!
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hmath729
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Re: Disease Detectives B
Correct, your turn.
Sorry it took me so long to reply, I was inactive.
Sorry it took me so long to reply, I was inactive.
Go HVS Dolphins!
"You don't beat the tests. The tests beat you!"
Medals (10 total) Inv./Reg./State
2016
Anat. -/4th/-
BPL 1st!/1st!/-
DD. -(9th)/1st!/-
2015
Anat. -(8th)/4th/-
BPL 2nd!/5th/-
DD -(9th)/4th/-
2014
Anat. -(8th)/5th/-
DD -(9th)/5th/-
Heredity -(7th)/-(7th)/-
"You don't beat the tests. The tests beat you!"
Medals (10 total) Inv./Reg./State
2016
Anat. -/4th/-
BPL 1st!/1st!/-
DD. -(9th)/1st!/-
2015
Anat. -(8th)/4th/-
BPL 2nd!/5th/-
DD -(9th)/4th/-
2014
Anat. -(8th)/5th/-
DD -(9th)/5th/-
Heredity -(7th)/-(7th)/-
-
bernard
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Re: Disease Detectives B
Define risk difference. Risk difference is the difference in rates of occurrence between exposed and unexposed groups in the population.
"One of the ways that I believe people express their appreciation to the rest of humanity is to make something wonderful and put it out there." – Steve Jobs