concepts

Question 1

Attributable fraction

Answer 1

Proportionen av fallen som orsakas av exponeringen. Dvs andelen fall som skulle försvinna om man tog bort exponeringen.
Causal Risk difference/kumulativa incidensen

Question 2

How can you calculate the absolute risk?

Answer 2

Numbers of events in a group divided by the number of people in the group in a specified period of time.

Absolute risk reduction - difference in absolute risk between groups ie exposed vs unexposed.

Question 3

Relative risk

Answer 3

Används som begrepp istället för e.g. Risk ratio men även i vissa fall rate ratio och odds ratio

Question 4

Rate ratio

Answer 4

Incidens bland exponerade/ incidens bland oexponerade

a/a+b // c/c+d

Question 5

Relative versus absolut risk

Answer 5

The relative risk si a good measure for the strength of the association between the exposure and the outcome. The impact this will have in the population is dependent of the incidence of the disease and the prevalence of the exposure.

Question 6

Bias

Answer 6

Systematic deviation from the true result (as opposed to random).