Canada 2004 - "Estimated Number of Excess Deaths in Canada Due to Air Pollution"
This study estimates the number of annual excess deaths due to current air pollutions levels in 8 major cities. They estimate that, in the Greater Vancouver Regional District, 230 deaths are due to short-term air pollution and 440 deaths are due to long-term air pollution, for a total of 680 (sic). They also estimate that this is 5% (range 3%-7%) of deaths from all causes.
For the eight cities across Canada, the study estimates that 1,800 (+/-700) deaths are due to short-term air pollution; 4,200 (+/-2,000), due to long-term; for a total of 5,900 (+/-2,100), or 8% (range 5%-11%) of all preventable deaths in those cities in Canada.
Note that short-term and long-term deaths may not be additive, but may rather overlap, making the total less than the sum of its parts.