Quantitative Methods 2017

Relative Risk analysis

Cohort study

Start

Time

Outcome

Exposed

Relative Risk

Cohort

Unexposed

Population

Develop Disease

Doesn’t

Exposed

a

b

Unexposed

c

d

Incidence Rate in Exposed  Duration

Relative Risk = = = Risk in Exposed Risk in Unexposed a / (a+b) c / (c+d)

Incidence Rate in Unexposed  Duration

FMB