Disease Detectives B/C

[Reckless57]

At a party of 100 people, 20 people later became ill. 15 of the 100 people ate the pork, 8 of which matched the case definition for the illness. What is the odds ratio for the pork? Interpret your result.

The odds ratio for the pork is 6.95, which indicates that those who ate the pork are 6.95 times more likely to contract the illness that those who did not eat the pork. This leads us to believe that pork is likely the cause of illness, although we cannot be sure until lab verification.

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

At a party of 100 people, 20 people later became ill. 15 of the 100 people ate the pork, 8 of which matched the case definition for the illness. What is the odds ratio for the pork? Interpret your result.

The odds ratio for the pork is 6.95, which indicates that those who ate the pork are 6.95 times more likely to contract the illness that those who did not eat the pork. This leads us to believe that pork is likely the cause of illness, although we cannot be sure until lab verification.

Your odds ratio is correct, but (Click to Show Hidden Text)

we cannot conclude that those who ate the pork are 6.95 times more likely to contract the illness based on the odds ratio. We can only conclude that there is a high degree of association between the pork and the illness. Any assessment of the risks between the two groups (or cohorts, if you prefer) would require a relative risk calculation.

Your turn!

[stlcards422]

At a party of 100 people, 20 people later became ill. 15 of the 100 people ate the pork, 8 of which matched the case definition for the illness. What is the odds ratio for the pork? Interpret your result.

sorry the hide didn't work so I'm removing the answer

[stlcards422]

At a party of 100 people, 20 people later became ill. 15 of the 100 people ate the pork, 8 of which matched the case definition for the illness. What is the odds ratio for the pork? Interpret your result.

Click to Show Answer

6.95?  The people who ate the pork is more likely than not to get the illness

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

At a party of 100 people, 20 people later became ill. 15 of the 100 people ate the pork, 8 of which matched the case definition for the illness. What is the odds ratio for the pork? Interpret your result.

Click to Show Answer

6.95?  The people who ate the pork is more likely than not to get the illness

Yep! You can ask a question.

[stlcards422]

What is the diffrence between Active/Passive surveillence?
WHat is the difference between Outbreak, Epidemic and Pandemic?
What type of study is Relative Risk?

[Tailsfan101]

What is the diffrence between Active/Passive surveillence?
WHat is the difference between Outbreak, Epidemic and Pandemic?
What type of study is Relative Risk?

Active surveillance is when health officials are actively collecting data themselves, whereas in passive surveillance they use the data that is reported to them.
An outbreak is simply more cases than expected in an area over a given time period. An epidemic is an outbreak that affects a large number of people over a wide geographic area, and a pandemic is a large-scale epidemic that affects a large proportion of the population over a very wide geographic area (i.e. several countries or continents).
Relative risk is used in a cohort study.

[Iamgoing2Mars2]

7 or 6.95

[stlcards422]

What is the diffrence between Active/Passive surveillence?
WHat is the difference between Outbreak, Epidemic and Pandemic?
What type of study is Relative Risk?

Active surveillance is when health officials are actively collecting data themselves, whereas in passive surveillance they use the data that is reported to them.
An outbreak is simply more cases than expected in an area over a given time period. An epidemic is an outbreak that affects a large number of people over a wide geographic area, and a pandemic is a large-scale epidemic that affects a large proportion of the population over a very wide geographic area (i.e. several countries or continents).
Relative risk is used in a cohort study.

Good

[Tailsfan101]

83 people go to a party. A few days after the party, 35 of the attendees develop Salmonella. Of the 35 ill, 29 ate the hors d'oeuvres, and 11 of the 48 well ate the hors d'oeuvres.
1. Calculate the relative risk for this scenario.
2. Interpret the answer for #1.