journal article Open Access Jun 01, 2023

Incidence and prevalence of interstitial lung diseases worldwide: a systematic literature review

BMJ Open Respiratory Research Vol. 10 No. 1 pp. e001291 · BMJ
View at Publisher Save 10.1136/bmjresp-2022-001291
Abstract
Interstitial lung disease (ILD) is a collective term representing a diverse group of pulmonary fibrotic and inflammatory conditions. Due to the diversity of ILD conditions, paucity of guidance and updates to diagnostic criteria over time, it has been challenging to precisely determine ILD incidence and prevalence. This systematic review provides a synthesis of published data at a global level and highlights gaps in the current knowledge base. Medline and Embase databases were searched systematically for studies reporting incidence and prevalence of various ILDs. Randomised controlled trials, case reports and conference abstracts were excluded. 80 studies were included, the most described subgroup was autoimmune-related ILD, and the most studied conditions were rheumatoid arthritis (RA)-associated ILD, systemic sclerosis associated (SSc) ILD and idiopathic pulmonary fibrosis (IPF). The prevalence of IPF was mostly established using healthcare datasets, whereas the prevalence of autoimmune ILD tended to be reported in smaller autoimmune cohorts. The prevalence of IPF ranged from 7 to 1650 per 100 000 persons. Prevalence of SSc ILD and RA ILD ranged from 26.1% to 88.1% and 0.6% to 63.7%, respectively. Significant heterogeneity was observed in the reported incidence of various ILD subtypes. This review demonstrates the challenges in establishing trends over time across regions and highlights a need to standardise ILD diagnostic criteria.PROSPERO registration number: CRD42020203035.
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Published
Jun 01, 2023
Vol/Issue
10(1)
Pages
e001291
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Cite This Article
Rikisha Shah Gupta, Ardita Koteci, Ann Morgan, et al. (2023). Incidence and prevalence of interstitial lung diseases worldwide: a systematic literature review. BMJ Open Respiratory Research, 10(1), e001291. https://doi.org/10.1136/bmjresp-2022-001291