Rheumatoid arthritis

Data-driven identification of subgroups in early rheumatoid arthritis: mortality and cardiovascular disease in a cohort from western Norway

RMD OpenPublished Cohort study

Authors' conclusion

Four distinct subgroups were identified with different clinical profiles and outcomes.

Study context

Population
Patients with incident rheumatoid arthritis (RA) diagnosed 2002–2013 and followed through 2022, western Norwayearly RA
Participants
873 patients
Exposure
Data-driven subgroups of early RA vs young-onset subgroup
Outcome
Risk of MACE (4p-MACE), death, acute coronary syndrome and stroke by subgroup
Methodological detailslatent class analysis, Cox regression adjusting for age and sex
  • Latent class analysis
  • Cox regression adjusting for age and sex

Main finding

As reported in the abstract

MACE (4p-MACE)
Each group vs young-onsetHazard ratio (95% CI)
Cardiometabolic
2.14(1.20–3.79)
Elderly-onset
1.89(1.07–3.35)

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)
MortalityCardiometabolicvs Young-onset1.79 (1.12–2.87)

Mortality

Only the cardiometabolic subgroup had increased mortality risk

Original publication

Data-driven identification of subgroups in early rheumatoid arthritis: mortality and cardiovascular disease in a cohort from western Norway. RMD Open. Published 26 September 2025. doi:10.1136/rmdopen-2025-005905

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