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The total number of deaths associated with tobacco smoking is represented by the sum of smoking attributable deaths, SAMk , due to different causes of death k. SAMk were calculated as

SAMk = DEATHSk*SAFk ,

where DEATHSk is the number of deaths due to cause k, SAFk is the smoking-attributable fraction defined as

SAFk = [E0 + E1*RR1(k) + E2*RR2(k) - 1]/[E0 + E1*RR1(k) + E2*RR2(k)],

where E0, E1, and E2 are the proportions of, respectively, never smokers, current smokers, and former smokers. RR1(k) and RR2(k) are the relative risks of death due to the cause k among current smokers and former smokers, respectively.

Smoking attributable years of potential life lost is defined as

SAYLLk = SAMk*YPLL65k ,

where YPLL65k - years of potential life lost per one death due to cause k, defined as the average difference between 65 years and age of death.