Fig. 4From: Unmet needs in the treatment of idiopathic pulmonary fibrosis―insights from patient chart review in five European countriesExacerbations in the last year, (a) pooled population (b) expert versus non-expert centers. * p ≤ 0.05; ** p ≤ 0.01 for (a) treated population versus untreated population and (b) expert population versus non-expert population. Excluding patients receiving only palliative care. For individual questions asked, please refer to Additional file 1 and Fig. 2 Back to article page