Research Paper Advance Articles
Frailty associates with respiratory exacerbations and mortality in the COPDGene cohort
Figure 1. Forest plot of frailty category on respiratory exacerbations. Abbreviations: OR: odds ratio of frailty/prefrailty on severe exacerbations; IRR: incident rate ratio of frailty/prefrailty on annual exacerbation rate; GOLD: Global Initiative for Obstructive Lung Disease. OR/IRR and 95% confidence intervals (adjusted for age, sex, current smoking, and forced expiratory volume in one second (FEV1) %predicted) are shown on log-transformed x-axis. Full details in