Systemic sclerosis & Raynaud's

Survival in Swedish patients with systemic sclerosis: a nationwide population-based matched cohort study

Rheumatology (Oxford)Published Nationwide population-based matched cohort study

Authors' conclusion

Despite advances in understanding the disease and in diagnostic methods over the past decades, survival is still severely impacted in Swedish patients diagnosed with SSc between 2004 and 2015.

Study context

Population
All patients with incident SSc in Sweden diagnosed 2004–2015 and matched general population comparators; followed to end of 2016matched cohort
Participants
1,139 vs 5,613
Exposure
Incident SSc vs matched general population comparators
  • SScn = 1,139
  • Comparatorsn = 5,613reference
Outcome
All-cause survival
Methodological detailsmatched 1:5 on sex, birth year and residential area, flexible parametric models, Kaplan-Meier
  • Matched 1:5 on sex, birth year and residential area
  • Flexible parametric models
  • Kaplan-Meier

Main finding

As reported in the abstract

5-year survival

10-year survival

  • SSc vs Comparators: P < 0.0001 — survival comparison

Observational data: associations, not effects.

Further findings

Per 1000 person-years

OutcomeSScComparatorsHR (95% CI)
Mortality rate and HRAt end of first year of follow-up42.115.83.7 (2.9–4.7)
Mortality rate and HRAt end of follow-up period2.0 (1.4–2.8)

Events

OutcomeSScComparators
Deaths during follow-up · median follow-up 5.0 years (SSc) and 6.0 years (comparators)268554

Original publication

Survival in Swedish patients with systemic sclerosis: a nationwide population-based matched cohort study. Rheumatology (Oxford). Published 19 August 2022. doi:10.1093/rheumatology/keac474

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