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### Re: Disease Detectives B/C

Posted: March 13th, 2018, 6:22 pm
IcsTam wrote:1. What is the difference between type one and type two error. Which one is considered more serious?
2. Determine which of the criteria the following situation satisfies for Hill's Criteria of Causation:
Exposure to contaminated unpasteurized milk precedes Brucellosis.
1. Type I = False Positive, Type II = False Negative; Type I
2. Temporality (time-order)

### Re: Disease Detectives B/C

Posted: March 13th, 2018, 6:50 pm
UTF-8 U+6211 U+662F wrote:
IcsTam wrote:1. What is the difference between type one and type two error. Which one is considered more serious?
2. Determine which of the criteria the following situation satisfies for Hill's Criteria of Causation:
Exposure to contaminated unpasteurized milk precedes Brucellosis.
1. Type I = False Positive, Type II = False Negative; Type I
2. Temporality (time-order)
For the second part of number one,type two is more serious, because there is a failure to administer necessary treatment (versus administering unnecessary treatment.) Otherwise, right. Your turn!

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 3:13 pm
What exactly is an odds ratio?

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 3:18 pm
UTF-8 U+6211 U+662F wrote:What exactly is an odds ratio?
An odds ratio is a measure of association between an exposure and an outcome that is used in case-control studies, and the formula is ad/bc.

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 6:46 pm
Knyte_Xjn wrote:
UTF-8 U+6211 U+662F wrote:What exactly is an odds ratio?
An odds ratio is a measure of association between an exposure and an outcome that is used in case-control studies, and the formula is ad/bc.
Good, but give a little more detail of what an odds ratio actually is (what is it a ratio of?)

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 7:41 pm
UTF-8 U+6211 U+662F wrote:
Knyte_Xjn wrote:
UTF-8 U+6211 U+662F wrote:What exactly is an odds ratio?
An odds ratio is a measure of association between an exposure and an outcome that is used in case-control studies, and the formula is ad/bc.
Good, but give a little more detail of what an odds ratio actually is (what is it a ratio of?)
It is the odds of getting the disease following a particular exposure compared to the odds of getting the disease without the exposure.

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 8:00 pm
Knyte_Xjn wrote:
UTF-8 U+6211 U+662F wrote:
Knyte_Xjn wrote: An odds ratio is a measure of association between an exposure and an outcome that is used in case-control studies, and the formula is ad/bc.
Good, but give a little more detail of what an odds ratio actually is (what is it a ratio of?)
It is the odds of getting the disease following a particular exposure compared to the odds of getting the disease without the exposure.

### Re: Disease Detectives B/C

Posted: March 14th, 2018, 10:24 pm
Name each step of the food production chain and provide a specific example of how food can get contaminated in each step.

### Re: Disease Detectives B/C

Posted: March 15th, 2018, 3:06 am
Knyte_Xjn wrote:Name each step of the food production chain and provide a specific example of how food can get contaminated in each step.
Production: Growing plants/raising animals used for food. Ex. Animalâ€™s reproductive organs are infected, contaminated water used on crops, fish eat toxins from food
Processing: Changing plants/animals into edible food. Ex. Contaminated water or ice is used, germs from animals can get into final product, contaminated surfaces used
Distribution: Getting food from place to place. Ex. Not refrigerated well, unsanitary surfaces used
Preparation: Getting food ready to eat, Ex. Food worker is sick and does not wash hands, knife used to cut chicken is used to cut veggies w/o washing, meat juice gets on items eaten raw

### Re: Disease Detectives B/C

Posted: March 15th, 2018, 5:11 pm
Froggie wrote:
Knyte_Xjn wrote:Name each step of the food production chain and provide a specific example of how food can get contaminated in each step.
Production: Growing plants/raising animals used for food. Ex. Animalâ€™s reproductive organs are infected, contaminated water used on crops, fish eat toxins from food
Processing: Changing plants/animals into edible food. Ex. Contaminated water or ice is used, germs from animals can get into final product, contaminated surfaces used
Distribution: Getting food from place to place. Ex. Not refrigerated well, unsanitary surfaces used
Preparation: Getting food ready to eat, Ex. Food worker is sick and does not wash hands, knife used to cut chicken is used to cut veggies w/o washing, meat juice gets on items eaten raw