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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Chest. 2018 Jul 17;154(6):1301–1310. doi: 10.1016/j.chest.2018.07.002

Figure 4. Cumulative incidence of asthma/COPD overlap in WTC-exposed firefighters who had a bronchodilator PFT.

Figure 4.

Panel A shows the cumulative incidence of asthma/COPD overlap in participants with blood eosinophil concentration ≥300 cells/μl (orange) and <300 cells/μl on first post-9/11 medical monitoring exam. The level of significance shown in each panel was determined by the log rank test. Panel B shows the cumulative incidence in those who reported ever smoking (orange) and never smoking (green). Panel C shows the cumulative incidence in participants who had an accelerated rate of post-9/11 FEV1 decline >64 ml/year (orange) and those with expected FEV1 decline ≤64 ml/year (green).