Disease Detectives B/C
- JoJoKeKe
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Re: Disease Detectives B/C
So for the CFR you never multiply by 100 at the end???
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Re: Disease Detectives B/C
Well, I guess it depends on who you ask.sciolyboy123 wrote:UTF-8 U+6211 U+662F wrote:Well, the incidence rate is new cases/population at risk/time period, okay?JoJoKeKe wrote:Thank you! That is what I assumed.
And, just to make sure I have the formulas correct based off of my research, the formulas are:
Incidence Rate:
New cases over a time period / Population at risk during that time period
Prevalence Rate:
(Persons with a given health problem / Population in that time period) x100
Natality Rate:
(Number of births in a population in a time / Total population) x1,000
Mortality Rate:
(Deaths during a time period / size of the population during a time period) x100 or 10,000 (depending)
Case-Fatality Rate:
(Number of Deaths within a given time period / Number of Cases within a given time period) x100
-------------------------
Correct?
Same thing with the CFR: Number of deaths/number of cases/time period
NOOOO, Incidence is new cases/total population at risk,
same thing with CFR. Number of deaths/number of cases.
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Re: Disease Detectives B/C
The reason time period isn't involved in the calculation because you can't really represent it.....
Example: 40 people are infected with tuberculosis, with 100 people being at risk to contract disease in 2013.
The incidence rate of 2013 is 0.4 or 40%
Hope you understand now.
Example: 40 people are infected with tuberculosis, with 100 people being at risk to contract disease in 2013.
The incidence rate of 2013 is 0.4 or 40%
Hope you understand now.
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- JoJoKeKe
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Re: Disease Detectives B/C
So do you only multiply by 100 if you don't want your answer in decimal form? (That's how it appears to me...)
Tournaments (2016): State / Nationals
Fossils: 3 / 8
Disease: 7 / NA
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Picture This: 1 / 17
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Idaho State (2017):
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Invasives: 1
Events 2019: Herpetology, Fossils, Dynamic Planet, Fermi Questions
Fossils: 3 / 8
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Green Gen: NA / 37
Picture This: 1 / 17
Invasives: 1 / 24
Idaho State (2017):
Rocks - 2
Microbe 2
Ecology 3
Optics 4
Invasives: 1
Events 2019: Herpetology, Fossils, Dynamic Planet, Fermi Questions
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Re: Disease Detectives B/C
You multiply by 100 to either get it into percent form or fraction form.JoJoKeKe wrote:So do you only multiply by 100 if you don't want your answer in decimal form? (That's how it appears to me...)
40%... per year.sciolyboy123 wrote:The reason time period isn't involved in the calculation because you can't really represent it.....
Example: 40 people are infected with tuberculosis, with 100 people being at risk to contract disease in 2013.
The incidence rate of 2013 is 0.4 or 40%
Hope you understand now.
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Re: Disease Detectives B/C
That's right.
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Re: Disease Detectives B/C
So you're suggesting that it technically does include the time period?sciolyboy123 wrote:That's right.
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Re: Disease Detectives B/C
Technically, but not in the calculation.
2014-15 Season
(Hooch,Dodgen, Regionals, State, Nats)
Bio-Process Lab(3rd,5th,-,3rd,14th )
Disease Detectives (1st,5th,1st,1st,10th )
Crave The Wave (2nd,-,-,-,-)
Experimental Design (-,1st, 4th,-,-)
Picture This (4th,6th, 1st, 4th,48th )
Simple Machines (1st,n/a, 1st, n/a)
(Hooch,Dodgen, Regionals, State, Nats)
Bio-Process Lab(3rd,5th,-,3rd,14th )
Disease Detectives (1st,5th,1st,1st,10th )
Crave The Wave (2nd,-,-,-,-)
Experimental Design (-,1st, 4th,-,-)
Picture This (4th,6th, 1st, 4th,48th )
Simple Machines (1st,n/a, 1st, n/a)
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Re: Disease Detectives B/C
Well, same example but over two years:sciolyboy123 wrote:Technically, but not in the calculation.
Example: 40 people are infected with tuberculosis, with 100 people being at risk to contract disease in 2013 & 2014.
The incidence rate is 40% over 2 years.
The incidence rate is 20% per year.
40/100/2 = 20%
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Re: Disease Detectives B/C
Yes. In that case, it would be right.
2014-15 Season
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Crave The Wave (2nd,-,-,-,-)
Experimental Design (-,1st, 4th,-,-)
Picture This (4th,6th, 1st, 4th,48th )
Simple Machines (1st,n/a, 1st, n/a)
(Hooch,Dodgen, Regionals, State, Nats)
Bio-Process Lab(3rd,5th,-,3rd,14th )
Disease Detectives (1st,5th,1st,1st,10th )
Crave The Wave (2nd,-,-,-,-)
Experimental Design (-,1st, 4th,-,-)
Picture This (4th,6th, 1st, 4th,48th )
Simple Machines (1st,n/a, 1st, n/a)
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