<prompt> Translate the following text to EnglishKama uchambuzi huu ilikadiria uhusiano wa C-R kati ya uchafuzi na mwisho wa afya kwa kutumia kazi moja kutoka kwa utafiti mmoja au kutumia kazi nyingi za C-R kutoka kwa masomo kadhaa, kila uhusiano wa C-R ulitumika kwa usawa kote Marekani ili kuzalisha makadirio ya faida ya afya.  <response>: Whether this analysis estimated the C-R relationship between a pollutant and a given health endpoint using a single function from a single study or using multiple C-R functions from several studies, each C-R relationship was applied uniformly throughout the U.S. to generate health benefit estimates. 