An epidemic that becomes unusually widespread and even global in its reach is referred to as a [2 pts] O Endemic Hyper endemic O Epidemic O PandemicThe Risk Difference is equal to: (4 pts] * The following table summarizes the incidence of lung cancer during a follow up period of time. Smokers Non-smokers Total N Lung cancer Total N Lung cancer 105 9 156 9 0.028 O 0.347 - 0.127 O -0.028