Disease Detectives B/C

3141592653589792
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Re: Disease Detectives B/C

Post by 3141592653589792 » December 12th, 2013, 11:06 am

3141592653589792 wrote:
Infinity Flat wrote:
3141592653589792 wrote:I do NOT Understand this event. Can someone help me? :D
Try taking a look at the 2014 training PowerPoint on the national website (link).
I am sorry, but the link does not seem to work. Can you please check if it is updated? :?:
Oh, it should work now. I apparently don't know how to copy-paste. :P

Not found again! :?:
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Re: Disease Detectives B/C

Post by Infinity Flat » December 13th, 2013, 4:36 pm

3141592653589792 wrote: Not found again! :?:
So, my original post was edited to be correct, but forgot the quoted one.
Either way, here is the link unambiguously:
http://www.soinc.org/disease_detectives_c
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2013: Astro (2, 6) / Chem (2, 5) / Circuits (8, 36) / Diseases (1,1) / Fermi (N/A, 24) / Materials (1, N/A)
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Re: Disease Detectives B/C

Post by 3141592653589792 » December 16th, 2013, 11:07 am

It worked! Thank you! :)
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Re: Disease Detectives B/C

Post by BipolarEconomist » January 18th, 2014, 7:24 pm

Here's some food for thought.

Q: Given a case-control study;

a=exposed case patients,b=control exposed,c=unexposed case patients,d=unexposed control

a=50
b=22
c=43
d=12

Complete the following:
-Calculate the odds ratio.

-What does the odds ratio suggest?
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Re: Disease Detectives B/C

Post by thisusernameistaken » January 22nd, 2014, 5:24 pm

How do you work through the relative risk equation and relative risk tells you how much more likely it is to to get a disease in a certain environment/situation relative to another right?
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Re: Disease Detectives B/C

Post by colorado mtn science » January 24th, 2014, 12:49 pm

thisusernameistaken wrote:How do you work through the relative risk equation and relative risk tells you how much more likely it is to to get a disease in a certain environment/situation relative to another right?
Relative risk = (a/(a+b))/(c/(c+d)), where a,b,c,d refer to cells in your standard 2*2 table. And you are basically correct, it measures strength of association between exposure and outcome. It is only used in cohort studies.

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Re: Disease Detectives B/C

Post by colorado mtn science » January 24th, 2014, 12:52 pm

BipolarEconomist wrote:Here's some food for thought.

Q: Given a case-control study;

a=exposed case patients,b=control exposed,c=unexposed case patients,d=unexposed control

a=50
b=22
c=43
d=12

Complete the following:
-Calculate the odds ratio.

-What does the odds ratio suggest?
OR=(50*12)/(22*43)=0.634. This suggests a protective factor in the given exposure

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Re: Disease Detectives B/C

Post by CulturallyScientific » February 6th, 2014, 10:55 pm

Can anyone help me with writing good case definitions? As far as I know, it's just person-place-time, but I was wondering if there are any other specifics I should be aware of/any practice out there specifically for this topic. Thanks!
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Re: Disease Detectives B/C

Post by Ahren07 » February 7th, 2014, 7:57 am

Can anyone give me some good study links? Im having trouble understanding this event and am short of some information. I have 15 days until my first competition and really need some good links. Thanks.
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Re: Disease Detectives B/C

Post by Flavorflav » February 7th, 2014, 9:05 am

CulturallyScientific wrote:Can anyone help me with writing good case definitions? As far as I know, it's just person-place-time, but I was wondering if there are any other specifics I should be aware of/any practice out there specifically for this topic. Thanks!
Some people add clinical features as a fourth element. Others consider that part of "person."

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