Low income and progression free survival in idiopathic pulmonary fibrosis: an association to uncover

Abstract

Background: Low is a known prognostic indicator of various chronic respiratory diseases but has not been studied in idiopathic pulmonary fibrosis (IPF). We hypothesize that a has an adverse prognostic impact on IPF. Methods: Patients were selected from the French national prospective cohort COFI. Patient’s was assessed through the median city-level provided by the French National Institute of Statistics and Economic Studies according to his/her residential address. Patients were classified in two groups as low income vs. income depending on whether their annual city-level was estimated to be Results: 200 patients were included. The average follow-up was 33.8±22.7 months. Patients in the low-income group were more likely to be of non-European origin (42 vs 17%, p Conclusions: Low appears to be a prognostic factor of progression free survival in IPF. And patients with incomes may also be exposed more frequently to occupational exposures and to higher cumulative exposure to fine particles.