Relative risk 2 means ?
Ans. is 'd' i.e., Incidence rate is 2 times higher in exposed group than non-exposed It is very impoant to know the difference between relative risk and attributable risk.
Risk of developing disease is 2 times higher among nonexposed
30% of disease among exposed is due to risk facter
200% increase in risk of developing disease among exposed
Incidence rate is 2 times higher in exposed group than non-exposed