Rheumatoid arthritis

Prevalence and mortality associations of interstitial lung abnormalities in rheumatoid arthritis within a multicentre prospective cohort of smokers

Rheumatology (Oxford)Published Prospective cohort study

Main finding · ILA prevalenceResult — go to the resultOdds ratio 4.76 95% CI 2.54–8.92

Authors' conclusion

In this cohort of smokers, RA was associated with ILAs and this persisted after adjustment for current/past smoking and genetic/lifestyle risk factors.

Study context

Population
Current and past smokers in COPDGene with research chest high-resolution CT (HRCT), excluding known interstitial lung disease (ILD) or bronchiectasis
Participants
83 vs 8,725
Exposure
RA vs non-RA comparators
  • RAn = 83
  • Non-RAn = 8,725reference
Outcome
Prevalence of interstitial lung abnormalities (ILAs) and all-cause mortality
Methodological detailsmulticentre, multivariable logistic regression, Cox regression
  • Multicentre
  • Multivariable logistic regression
  • Cox regression

Main finding

ILA prevalence

Odds ratio

4.76

95% CI 2.54–8.92

By group

RAvs Non-RA
OR 4.76 (95% CI 2.54–8.92)

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)
All-cause mortality, RA with ILAs or indeterminate for ILAsRA with ILAs or indeterminatevs Non-RA without ILAs3.16 (2.11–4.74)
All-cause mortality, RA with ILAs or indeterminate for ILAsRA with ILAs or indeterminatevs RA without ILA3.02 (1.36–6.75)

Original publication

Prevalence and mortality associations of interstitial lung abnormalities in rheumatoid arthritis within a multicentre prospective cohort of smokers. Rheumatology (Oxford). Published 23 October 2023. doi:10.1093/rheumatology/kead277

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