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Table 2 Modelling the impact of a risk factor illustrated with a hypothetical population

From: The effect of modifiable risk factors on geographic mortality differentials: a modelling study

Quartile of risk Baseline population distribution Average life expectancy Baseline PYL Scenario population distribution Scenario PYL
1 25,000 40 1,000,000 40,000 1,600,000
2 25,000 35 875,000 30,000 1,050,000
3 25,000 30 750,000 20,000 600,000
4 25,000 25 625,000 10,000 250,000
Total 100,000   3,250,000 100,000 3,500,000
APYL    32.5   35.0