<prompt> Denominator for calculating propoional moality rate from a specific disease isMidyear population during that yearPopulation at risk in that paicular areaTotal deaths in that yearAttributable deaths of a paicular disease  <response>: Propoional moality rate ratiofrom a specific date is used to know the propoion of total deaths are due to a paicular cause number of deaths from the specific disease in a year total deaths from all causes in that yearPark 23e pg: 58 