Lupus & antiphospholipid syndrome

Interstitial lung disease in SLE: a 30-year population study

Rheumatology (Oxford)Published Population-based cohort study

Main finding · ILD IR per 1000 PYResult — go to the resultIncidence rate ratio 26.8

Authors' conclusion

ILD occurred more frequently in SLE than the controls with older age, smoking and serositis as risk factors.

Study context

Population
Patients with SLE and matched hospitalized controls, Western Australia, 1985–2014
Participants
1,854 vs 12,107
Exposure
SLE vs matched hospitalized controls
  • SLEn = 1,854
  • Controlsn = 12,107reference
Outcome
ILD incidence rate per 1000 person years
Methodological detailsmatched hospitalized controls, state-wide longitudinal hospital data, multivariate logistic regression
  • Matched hospitalized controls
  • State-wide longitudinal hospital data
  • Multivariate logistic regression

Main finding

ILD IR per 1000 person years (PY)

Incidence rate ratio

26.8

By group

As reported in the abstract

Interstitial lung disease (ILD) occurred in SLE patients
3.8%

Observational data: associations, not effects.

Further findings

Mortality rate per 1000 PY — SLE-ILD vs SLE without ILD

MRR 2.94

OutcomeMRR
Mortality rate per 1000 PYSLE-ILD vs Controls with ILD2.28

Time to ILD from index

Shorter in SLE

Risk factors for ILD

Older age, smoking and serositis

Survival and cause of death

ILD decreased survival for SLE and control cohorts; respiratory causes of death predominated in both ILD groups

Original publication

Interstitial lung disease in SLE: a 30-year population study. Rheumatology (Oxford). Published 7 November 2025. doi:10.1093/rheumatology/keaf597

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