<prompt> Relative risk 2 means ?Risk of developing disease is 2 times higher among nonexposed30 of disease among exposed is due to risk facter200 increase in risk of developing disease among exposedIncidence rate is 2 times higher in exposed group than non-exposed  <response>: 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. 