1. Mortality rate in rheumatoid arthritis-related interstitial lung disease: the role of radiographic patterns
- Author
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José Luis Álvarez-Sala, Lydia Abasolo, Cristina Vadillo, Leticia Leon, Juan Angel Jover, María Jesús Rodríguez-Nieto, Dalifer Freites-Núñez, Fredeswinda Romero-Bueno, Maria Asuncion Nieto, and Olga Sánchez-Pernaute
- Subjects
Pulmonary and Respiratory Medicine ,Male ,medicine.medical_specialty ,Exacerbation ,Population ,Interstitial lung disease ,Arthritis, Rheumatoid ,03 medical and health sciences ,Diseases of the respiratory system ,0302 clinical medicine ,Usual interstitial pneumonia ,Internal medicine ,medicine ,Risk of mortality ,Humans ,Longitudinal Studies ,Rheumatoid arthritis ,Mortality ,education ,Aged ,030203 arthritis & rheumatology ,Aged, 80 and over ,education.field_of_study ,RC705-779 ,business.industry ,Mortality rate ,Middle Aged ,respiratory system ,medicine.disease ,Survival Analysis ,respiratory tract diseases ,Pneumonia ,Standardized mortality ratio ,030228 respiratory system ,Spain ,Multivariate Analysis ,Female ,business ,Lung Diseases, Interstitial ,Tomography, X-Ray Computed ,Research Article - Abstract
Background To assess mortality rate (MR) and standardized mortality rate (SMR) of rheumatoid arthritis-related interstitial lung disease (RA-ILD) patients and to evaluate the role of radiographic patterns in mortality. Methods A longitudinal multicentric study was conducted in RA-ILD patients from 2005 to 2015 and followed-up until October 2018 in Madrid. Patients were included in the Neumologia-Reumatología y Enfermedades Autoinmunes Registry, from diagnosis of ILD. The main outcome was all-cause mortality. The radiographic pattern at baseline [usual interstitial pneumonia (UIP), nonspecific interstitial pneumonia (NSIP), or others] was the independent variable. Covariables included sociodemographic and clinical data. Survival techniques were used to estimate MR, expressed per 1000 persons-year with their 95% confidence intervals [CI]. Cox multiple regression model was run to examine the influence of radiographic patterns on survival. SMR [CI] was calculated comparing MR obtained with MR expected in the general population of Madrid by indirect age-gender standardization. Results 47 patients were included with a follow-up 242 patients-year. There were 16 (34%) deaths, and most frequent causes were acute ILD exacerbation and pneumonia. MR was 64.3 [39.4–104.9], and 50% of the patients died at 8.3 years from ILD diagnosis. After adjusting for confounders, (UIP compared to NSIP was associated with higher mortality risk. The overall SMR was 2.57 [1.4–4.17]. Women of 60–75 years of age were the group with the highest SMR. Conclusions RA-ILD is associated with an excess of mortality compared to general population. Our results support that UIP increases the risk of mortality in RA-ILD, regardless other factors.
- Published
- 2021