Disease Detectives B/C

[Nerd_Bunny]

The 2017 Nationals test packet included graphs depicting raw scores for each team in each event, so yes, I have raw scores, as I bought that B packet.

Just curious- what was our score compared to the other scores?

It's a little hard to read, but it looks like our score was about 98, whereas 6th place had ~111 and 1st had 121.

Wow, we were actually pretty close. It looks like even just small point amounts separated medals from non-medals.

[BasuSiddha23]

In Division B, will we need to know Koch's Postulate or Hill's Criteria?

[Tailsfan101]

In Division B, will we need to know Koch's Postulate or Hill's Criteria?

I would suggest putting them on your cheat sheet as I have done. You never know what might come up on a test, and those could very easily end up on a B test.

[Birdmusic]

In Division B, will we need to know Koch's Postulate or Hill's Criteria?

I would suggest putting them on your cheat sheet as I have done. You never know what might come up on a test, and those could very easily end up on a B test.

Good advice, both have come up for me before on B tests. If your cheat sheet can't fit anymore, print it out and scribble it in pencil on the margins. (or use a smaller font size)

[BasuSiddha23]

In Division B, will we need to know Koch's Postulate or Hill's Criteria?

I would suggest putting them on your cheat sheet as I have done. You never know what might come up on a test, and those could very easily end up on a B test.

Good advice, both have come up for me before on B tests. If your cheat sheet can't fit anymore, print it out and scribble it in pen on the margins. (or use a smaller font size)

Thanks for answering my question!

In Disease, how do you test and make hypotheses for a case.

[Birdmusic]

I would suggest putting them on your cheat sheet as I have done. You never know what might come up on a test, and those could very easily end up on a B test.

Good advice, both have come up for me before on B tests. If your cheat sheet can't fit anymore, print it out and scribble it in pen on the margins. (or use a smaller font size)

Thanks for answering my question!

In Disease, how do you test and make hypotheses for a case.

Look at odds or risk ratio of all the possible exposures (food for this year). The one with the greatest risk or odds ratio is the most likely, however, to confirm it, further lab testing is best, especially if your in division C and bias is a part of it. Also, for a hypothesis where you don’t have any numerical data yet, go with something that has been implicated in past outbreaks (like undercooked beef for E. coli) or something that makes the most sense. (if there was a malaria outbreak you could implicate recent increase in rainfall but not raw eggs). Usually they’ll give you 4-7 different foods that could’ve caused it and numbers, so the first method is good. This is if you’re asked to do it on a test.

In general, observational/ecological studies can be used to generate early hypotheses. Analytic studies and some lab work can develop the hypotheses further and confirm the hypotheses. Lab testing is best when possible, however in cases where not possible, an analytic study is pretty good proof of association.
(Example of lab work: bacteria found in people has same genetic profile as found in a certain brand of cheese)

If I missed anything, please add on or correct me! I’m not the best at this part of disease detectives.

[Killboe]

What was on your tests? Mine was mainly vocab for the 1st 70 questions. After that it was contingency table comprehension / cases.

[UTF-8 U+6211 U+662F]

My regionals test was pretty much just cases

Also, for hypotheses, remember the epidemiological triad, agent, source, and spread. Statistically speaking, there are two kinds of hypotheses, the null hypothesis (no association) and the altrrnative hypothesis (association between exposure and outcome). If you're in division C, make sure you know how to do tests involving these (e.g. chi-squared). Also understand CIs and p-values.

[Killboe]

What would FATTOM be considered? I'm adding it to the wiki but I don't know which sub-category it would fall under.

[Nerd_Bunny]

What would FATTOM be considered? I'm adding it to the wiki but I don't know which sub-category it would fall under.

I've never seen it before on a test, but if you're adding it to the wiki you should probably put it somewhere near the food-borne specific part.

EDIT: I just looked and there really isn't a good food-borne specific part. Maybe you should add one and put it there.