<prompt> Translate the following text to SwahiliAlthough the consistent advice from EPAs Science Advisory Board has been to model premature mortality associated with PM exposure as a non-threshold effect, that is, with harmful effects to exposed populations regardless of the absolute level of ambient PM concentrations, some analysts have hypothesized the presence of a threshold relationship.  <response>: Ingawa ushauri wa mara kwa mara kutoka kwa Bodi ya Ushauri ya Sayansi ya EPA imekuwa kuunda mfano wa vifo vya mapema vinavyohusiana na mfiduo wa PM kama athari isiyo ya kizingiti, ambayo ni, na athari mbaya kwa watu waliofichuliwa bila kujali kiwango cha jumla cha viwango vya PM, baadhi ya wachambuzi wamedokeza uwepo wa uhusiano wa kizingiti. 