Lies, Damned Lies and Statistics

Today in a report on Boris's change of air quality targets the Grauniad repeats it reporting, first aired in June, that poor air quality results in 4267 (exactly??) Londoners dying prematurely each year. Of course, the Grauniad fails to say anything about the distribution of those deaths. How many are estimated to be 10 minutes premature, or 10 hours, or 10 days, or 10 months? I just hate it when shock horror stories are promulgated without the information to allow one to understand just what's going on.