<prompt> Translate the following text to EnglishIngawa hii ingekuwa bias makadirio kulingana na viwango vya uchafuzi wa hivi karibuni juu, pia ingekuwa maana ya kweli muda mrefu athari ya muda mrefu ya uchafuzi.  <response>: While this would bias estimates based on more recent pollution levels upwards, it also would imply a truly long-term chronic effect of pollution. 