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. 2023 Aug 1;20(8):1136–1143. doi: 10.1513/AnnalsATS.202212-1011OC

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Figure 1. — Joint longitudinal survival models evaluating the association between baseline forced expiratory volume in 1 second (A) and longitudinal change from baseline (B) and mortality. Models control for age on September 11, 2001; race/ethnicity; height; smoking (ever vs. never); work assignment on September 11, 2001 (firefighters vs. emergency medical service providers); and World Trade Center initial arrival time. *Category corresponds with National Institute of Occupational Safety and Health life table analysis system major categories (22). FEV₁ = forced expiratory volume in 1 second; HR = hazard ratio.