Understanding And Appraising Evidence Flashcards
1
Q
Background of circumcision
A
In west Africa for 5000 years and Middle East for 3000 years
Came to US and Canada
2
Q
What is prevalence?
A
The number of cases at a given time in a given area
3
Q
How could prevalance of HIV be measured?
A
Self report
Blood test
4
Q
What are the problems of methods used to determine prevalence?
A
Data from everyone is unlikely to be collected
Self -reported cases could be lying
Sensitivity and specificity of test
5
Q
What is relative risk?
A
Incidence in exposed /incidence in unexposed
6
Q
Possible explanation of a relative risk?
A
Bias
Chance
Confounding
Cause
