Disease Detectives B/C

[Nerd_Bunny]

Hi this is kinda creepy but I’ve been reading all the posts and I wanted to say...

THANKS TO YOU I GOT FIRST!!!!!!

Sincerely, Part of the first place team from Ivy Tech Bloomington Regionals.

PS. See ya at state!

Oooh congrats! It would be awesome if we all went to Nationals and we could do a meet-up.

Ah, we may not make placing at state. We didn’t last year.

Keep studying and I'm sure you'll do great. How competitive is Indiana? Some days it feels like Idaho doesn't really care about SO...

[Nerd_Bunny]

1. What is the difference between surveillance and syndromic surveillance?
2. Give an example of Berkson's bias.

Sorry, I don't have many questions

1. Surveillance and syndromic surveillance are basically the same thing.
2. A case control study of pancreatic cancer and coffee drinking is conducted. Controls were selected from gastroenterologist’s patients in same hospital. However, GI patients are less likely to drink coffee than the rest of the population because of their disease. Hence the OR for coffee drinking was artificially increased due to the under-representation of coffee drinkers among controls.

[Benewcomb]

Oooh congrats! It would be awesome if we all went to Nationals and we could do a meet-up.

Ah, we may not make placing at state. We didn’t last year.

Keep studying and I'm sure you'll do great. How competitive is Indiana? Some days it feels like Idaho doesn't really care about SO...

There’s this one school, Thomas Jefferson, that ALWAYS wins. Nobody has beat them. One school got a close second last year, nothing else. We’ve barely even placed.

[Tailsfan101]

Ah, we may not make placing at state. We didn’t last year.

Keep studying and I'm sure you'll do great. How competitive is Indiana? Some days it feels like Idaho doesn't really care about SO...

There’s this one school, Thomas Jefferson, that ALWAYS wins. Nobody has beat them. One school got a close second last year, nothing else. We’ve barely even placed.

Yeah, checking the wiki, it looks like Thomas Jefferson won state by 102 points last year. Good luck anyway!

[Benewcomb]

Keep studying and I'm sure you'll do great. How competitive is Indiana? Some days it feels like Idaho doesn't really care about SO...

There’s this one school, Thomas Jefferson, that ALWAYS wins. Nobody has beat them. One school got a close second last year, nothing else. We’ve barely even placed.

Yeah, checking the wiki, it looks like Thomas Jefferson won state by 102 points last year. Good luck anyway!

thanks for the vote of confidence

[Tailsfan101]

Going to start this up again...

1. What is the name of the parasite that causes Toxoplasmosis?
2. How long is the incubation period for Toxoplasmosis?
3. List three symptoms of Toxoplasmosis.
4. List three foods that can be infected with Toxoplasmosis.
5. How long does Toxoplasmosis typically last?

Ha ha, I bet none of you have this on your cheat sheet...

[Nerd_Bunny]

Going to start this up again...

1. What is the name of the parasite that causes Toxoplasmosis?
2. How long is the incubation period for Toxoplasmosis?
3. List three symptoms of Toxoplasmosis.
4. List three foods that can be infected with Toxoplasmosis.
5. How long does Toxoplasmosis typically last?

Ha ha, I bet none of you have this on your cheat sheet...

1. Toxoplasma gondii
2. 1-5 days
3. Flu-like symptoms with swollen lymph glands or muscle aches and pains.
4. Lamb, pork, and venison. Also transmitted with cat poop. (This is why pregnant women shouldn't change a litter box.)
5. Can last for a month or longer.

[Tailsfan101]

Going to start this up again...

1. What is the name of the parasite that causes Toxoplasmosis?
2. How long is the incubation period for Toxoplasmosis?
3. List three symptoms of Toxoplasmosis.
4. List three foods that can be infected with Toxoplasmosis.
5. How long does Toxoplasmosis typically last?

Ha ha, I bet none of you have this on your cheat sheet...

1. Toxoplasma gondii
2. 1-5 days
3. Flu-like symptoms with swollen lymph glands or muscle aches and pains.
4. Lamb, pork, and venison. Also transmitted with cat poop. (This is why pregnant women shouldn't change a litter box.)
5. Can last for a month or longer.

Looks good, except for #2 I have 10-23 days. Your turn!

[Nerd_Bunny]

I'm going to try to do "hard" questions.

Info:
You perform a test. You learn that you got 22 false positives, 10 false negatives, 75 true positives, and 38 true negatives.
1. Calculate the sensitivity and interpret your results.
2. Calculate the specificity and interpret your results.
(The following questions do not pertain to the info.)
3. Which organisms contain two types of nucleic acid? (Bacteria, virus, animal, etc.)
4. Define antigen.
5. Define animal in an epidemiology context.
6. Which case studies are used to calculate prevalence?
7. Define and give an example of Simpson's paradox.
8. Define and give an example of Late-Look bias.

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

I'm going to try to do "hard" questions.

Info:
You perform a test. You learn that you got 22 false positives, 10 false negatives, 75 true positives, and 38 true negatives.
1. Calculate the sensitivity and interpret your results.
2. Calculate the specificity and interpret your results.
(The following questions do not pertain to the info.)
3. Which organisms contain two types of nucleic acid? (Bacteria, virus, animal, etc.)
4. Define antigen.
5. Define animal in an epidemiology context.
6. Which case studies are used to calculate prevalence?
7. Define and give an example of Simpson's paradox.
8. Define and give an example of Late-Look bias.

Oh boy, I'm glad statistics are limited in B division (Click to Show Hidden Text)

1. 75/(75+10) = 75/85 = 15/17; The test detects 15/17 of positive cases.
2. 38/(38+22) = 38/60 = 19/30; The test correctly rules out 19/30 of negative cases.
3. I'm not so sure about this, but I would guess all eukaryotes
4. A foreign substance in response to which antibodies are produced
5. Not sure what you mean here, but arthropods often act as vectors to disease, and vertebrates often act as natural reservoirs to disease. People can contract disease from such vertebrates by zoonosis.
6. You can calculate the prevalence of a disease using a descriptive study, e.g. time series analyses, ecological studies, and surveys (cross-sectional studies).
7. When data has one correlation when separated into groups but the opposite (positive vs negative) correlation when combined, e.g. if the prevalence of the disease increases with increasing age in the age groups of 20-30 and 70-80, but the group of 70-80 has a much smaller prevalence of disease, the prevalence of the disease actually has a negative correlation with age.
8. No idea.