Fig. 4From: Change in inhaled corticosteroid treatment and COPD exacerbations: an analysis of real-world data from the KOLD/KOCOSS cohortsKaplan-Meier plots of a time to first overall exacerbation b time to first severe exacerbation. There were no statistically significant differences between ICS withdrawal and continued groups in the time to first exacerbation or to first severe exacerbation. The P value for this trend was derived by using the Log-rank testBack to article page