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UTF-8 U+6211 U+662F wrote:

Knyte_Xjn wrote:

Tailsfan101 wrote: 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 result of asking these questions, and how can their presence/effects be mitigated?

Click to Show Answer

1) Age, sex, etc.

2) Assuming a food-borne illness, where they ate, when symptoms started, what they recall eating, etc.

3) Response bias, interviewer bias, and recall bias may occur. Their presence may be mitigated by making sure all questions are partially worded and do not lead the participant.

UTF-8 U+6211 U+662F wrote:What is the difference between an experimental and observational study? When might an epidemiologist use each type?

An experimental study involves an active attempt to change a disease determinant (as in exposure, or behavior). Meanwhile, an observational study is a study that allows nature (i.e. the DISEASE) to take its natural course while the epidemiologist only observes changes and characteristics and doesn't intervene.
An epidemiologist may use an experimental study to determine plausible intervention/prevention methods for the disease. An epidemiologist may use an observational study to establish characteristics of the disease.

amk578 wrote:

UTF-8 U+6211 U+662F wrote:What is the difference between an experimental and observational study? When might an epidemiologist use each type?

Answer? (Click to Show Hidden Text)

An experimental study involves an active attempt to change a disease determinant (as in exposure, or behavior). Meanwhile, an observational study is a study that allows nature (i.e. the DISEASE) to take its natural course while the epidemiologist only observes changes and characteristics and doesn't intervene.
An epidemiologist may use an experimental study to determine plausible intervention/prevention methods for the disease. An epidemiologist may use an observational study to establish characteristics of the disease.

amk578 wrote: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.

1. Iatrogenic transmission refers to the transmission of disease due to medical procedures e.g. through the use of contaminated needles.
2. Jonas Salk
3. case-control; cohort

Knyte_Xjn wrote:

amk578 wrote: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 (Click to Show Hidden Text)

1. Iatrogenic transmission refers to the transmission of disease due to medical procedures e.g. through the use of contaminated needles.
2. Jonas Salk
3. case-control; cohort

Birdmusic wrote:Since no one has posted since last month...
Give the definition and an example of a hyperendemic disease.

A hyperendemic disease is a disease that is constantly and consistently at a high prevalence rate within a population. Arthritis is a hyperendemic disease.

amk578 wrote:

Birdmusic wrote:Since no one has posted since last month...
Give the definition and an example of a hyperendemic disease.

Answer (Click to Show Hidden Text)

A hyperendemic disease is a disease that is constantly and consistently at a high prevalence rate within a population. Arthritis is a hyperendemic disease.