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Table 1 Results of pairs of studies using the IMPACT model: for each of 4 countries one study was performed using Deaths Prevented or Postponed (DPPs) and one using Life Years Gained (LYG).

From: Why choice of metric matters in public health analyses: a case study of the attribution of credit for the decline in coronary heart disease mortality in the US and other populations

  DPPs (% share) LYG (% share) LYG per DPP
USA 1980-2000 [4, 11]    
Better treatment 159,300 (52%) 1,092,300 (35%) 6.9
Favourable risk factor changes 149,600 (48%) 2,055,600 (65%) 13.7
Ireland 1985-2000 [3, 10]    
Better treatment 1640 (47.5%) 14,505 (31%) 8.8
Favourable risk factor changes 1810 (52.5%) 32,705 (69%) 18
England and Wales 1981-2000 [2, 8]    
Better treatment 25,765 (42%) 194,145 (21%) 7.5
Favourable risk factor changes 35,830 (58%) 731,270 (79%) 20.4
Scotland 1975-1994 [1, 9]    
Better treatment 1862 (41%) 12025 (25%) 6.5
Favourable risk factor changes 2674 (59%) 35991 (75%) 13.5
  1. Data are the population totals for DPP and LYG (% share) and the ratios of LYG to DPP
  2. DPP = Deaths Prevented or Postponed LYG = Life Years Gained