<prompt> Translate the following text to EnglishKwa sababu ya umuhimu wa kipimo hiki na kutokuwa na uhakika mkubwa kati ya wachumi na watunga sera kuhusu njia sahihi ya kupima kupunguzwa kwa hatari za vifo, sehemu hii inazungumzia baadhi ya masuala yanayohusiana na makadirio ya vifo vya mapema.  <response>: Because of the importance of this endpoint and the considerable uncertainty among economists and policymakers as to the appropriate way to value reductions in mortality risks, this section discusses some of the issues surrounding the estimation of premature mortality. 