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. 2020 Apr 8;10(4):e036319. doi: 10.1136/bmjopen-2019-036319

Figure 1.

Figure 1

PMRs for lung cancer and COPD in job groups with no major occupational exposure to causes of either disease: men in England and Wales aged 20–74 years, 1979–1980 and 1982–2010. The areas of the circles represent the expected number of deaths from COPD in each job group over the study period. The regression line of PMR for lung cancer against PMR for COPD is from an analysis that weighted according to the expected number of deaths from COPD in each job group over the study period (see text). COPD, chronic obstructive pulmonary disease; PMR, proportional mortality ratio.