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. Author manuscript; available in PMC: 2020 Sep 7.
Published in final edited form as: Thorax. 2018 Jul 20;74(2):114–124. doi: 10.1136/thoraxjnl-2018-211881

Figure 5.

Figure 5

Comparison of change in airflow indices on follow-up spirometry across the RV:TLC strata. Graphs represent coefficient of change with 95% CIs in airflow indices across the RV:TLC strata relative to the reference group (subjects with low-normal RV:TLC) from mixed effect linear regression modelling with adjustment for age, sex, height and time to follow-up spirometry. Bold values represent significant p values. FEF25–75, maximum airflow at mid-lung volume; RV, residual volume; TLC, total lung capacity.