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by Knyte_Xjn
January 13th, 2019, 10:55 pm
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

1. What is iatrogenic transmission? 2. Who discovered the polio vaccine? 3. Fill in the blank: An odds ratio calculation would be used in a _______ study, but a relative risk calculation would be used in a ______ study. Attempt|1. Iatrogenic transmission refers to the transmission of disease due to...
by Knyte_Xjn
January 3rd, 2019, 6:06 pm
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

All correct, your turn! Sorry for the late response! When investigating an outbreak of a food-borne illness what demographics from the population being studied may be useful? If you are conducting a survey, what questions should you ask the lab-confirmed cases? Which biases may be introduced as a r...
by Knyte_Xjn
December 12th, 2018, 8:25 pm
Forum: 2019 Question Marathons
Topic: Fermi Questions C
Replies: 36
Views: 4455

Re: Fermi Questions C

How many mistakes in DNA replication occur during a human’s lifetime? Attempt|I'll assume that there's 1 mistake per every 10^5 nucleotides, and given that there are 10^10 (?) base pairs per diploid cell, that should amount to 10^5 mistakes each time a cell divides. I'll assume that there are 10^13...
by Knyte_Xjn
December 1st, 2018, 11:30 am
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

1. What are the five steps of surveillance? 2. What are the four types of surveillance? 3. Give three reasons why surveillance is of benefit to the community. Attempt|1. (1) reporting (2) data accumulation (3) data analysis (4) judgment (5) action 2. (1) medical surveillance (2) sentinel surveillan...
by Knyte_Xjn
November 23rd, 2018, 9:19 am
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

1. What are the five steps of surveillance? 2. What are the four types of surveillance? 3. Give three reasons why surveillance is of benefit to the community. Attempt|1. (1) reporting (2) data accumulation (3) data analysis (4) judgment (5) action 2. (1) medical surveillance (2) sentinel surveillan...
by Knyte_Xjn
November 23rd, 2018, 8:39 am
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

Here are a few relatively basic questions: 1. What is the name of the list of criteria used to determine the existence of a causal relationship? For the following questions, identify which criterion best matches the description in Part A. 2. a) People who smoke more are at greater risk of contracti...
by Knyte_Xjn
November 22nd, 2018, 10:09 am
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

What's the difference between incidence and prevalence? Attempt|Whereas incidence is the rate of new cases that develop in a population at risk over a period of time (new cases/total population at risk), prevalence is a measure of the percentage of the population afflicted with a specific health st...
by Knyte_Xjn
November 20th, 2018, 3:34 pm
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

What's the difference between incidence and prevalence? Attempt|Whereas incidence is the rate of new cases that develop in a population at risk over a period of time (new cases/total population at risk), prevalence is a measure of the percentage of the population afflicted with a specific health st...
by Knyte_Xjn
November 18th, 2018, 11:35 am
Forum: 2019 Question Marathons
Topic: Astronomy C
Replies: 55
Views: 5844

Re: Astronomy C

Extremely sorry for the extremely late post! 1. (a) What is the minimum speed required for a celestial object to free itself from the gravitational attraction of a massive object? (b) You observe a planet orbiting a massive star with a mass of 74 Msol. Calculate the value mentioned in 1a for this p...
by Knyte_Xjn
November 17th, 2018, 9:31 pm
Forum: 2019 Question Marathons
Topic: Disease Detectives B/C
Replies: 128
Views: 10764

Re: Disease Detectives B/C

Suppose that you are designing a test to screen every individual in the United States aged 13-99 for the Bubonic plague. (a) What pathogen causes the Bubonic plague, and what type of agent is it? (b) What characteristics should a test of such large extent have? (Hint: mention statistical measures s...

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