Lupus & antiphospholipid syndrome

Implications of the accuracy of diagnostic algorithms for systemic lupus on our understanding of racial disparities in pregnancy outcomes

Rheumatology (Oxford)Published Retrospective cohort study

Authors' conclusion

EMR-derived cohorts of pregnancies in women who are Black, but not White, provided accurate estimations of pregnancy outcomes.

Study context

Population
Pregnancies with delivery data (2014–2019) in women with ≥1 SLE ICD9/10 code, academic institutions in the United States (Carolinas Collaborative)
Participants
172 pregnancies
Exposure
Black vs White women; Electronic medical record (EMR)-derived vs chart review-confirmed SLE cohorts
Outcome
Adverse pregnancy outcomes
Methodological detailsEMR-based, multicentre (academic institutions, Carolinas Collaborative), EMR-based algorithms vs chart review confirmation
  • EMR-based
  • Multicentre (academic institutions, Carolinas Collaborative)
  • EMR-based algorithms vs chart review confirmation

Main finding

As reported in the abstract

Adverse pregnancy outcomes, pregnancies in women with ≥1 ICD9/10 SLE code

40%

Adverse pregnancy outcomes, pregnancies with confirmed SLE

52%

White women: SLE frequently over-diagnosed; adverse pregnancy outcome rates lower in EMR-derived vs confirmed SLE cohorts

40-75%

Black women: over-diagnosis less common; pregnancy outcomes lower in EMR-derived vs confirmed SLE cohorts

12-20%

Observational data: associations, not effects.

Original publication

Implications of the accuracy of diagnostic algorithms for systemic lupus on our understanding of racial disparities in pregnancy outcomes. Rheumatology (Oxford). Published 24 May 2023. doi:10.1093/rheumatology/kead178

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