EPI

Question 1

What is the difference between descriptive, analytical and experimental studies?

Answer 1

Descriptive
- Describe observations about cases

Analytical studies
- Look at populations and analyzing them from particular variables

Experimental
- involve some type of intervention to see if it influences a particular outcome

Question 2

List the two main examples of descriptive studies.

Answer 2

Case report: describe details related to a noteworthy clinical occurrence.

Case series: identifies common features and variations among multiple cases.

Question 3

List the three main examples of analytical studies.

Answer 3

e.g. 100 random dog owners and ask if the dog every had a mammary tumor; when or if their dog was spayed to see if it is related to tumor development

e.g. look at veterinary students and law students as two diff cohorts and compare incidence of alcohol related liver disease

e.g. cats with polydactyly and compare to control group of cats with normal digits and look for risk factors associated with polydactyly.

Question 4

What are the pros and cons of analytical studies?

Answer 4

Question 5

List the main example of experimental studies.

Answer 5

Clinical trials
- randomized vs non-randomized
- prospective or retrospective