<prompt> Incidence rate of lung cancer among smokers is 8 per 1000 and among non-smokers is 1 per 1000. Population attributable risk is -899510100  <response>: Ans. is a i.e., 89 Population attributable risk PAR o It is the incidence of disease or death in the total population minus the incidence of disease or death among those who are not exposed. 