Vasculitis & polymyalgia rheumatica

Clinical association of health-related quality of life and mortality in an antineutrophil cytoplasmic antibody-associated vasculitis cohort

Semin Arthritis RheumPublished Cohort study

Main finding · All-cause mortality per one-unit decrease in SF-36 PCS (multivariable Cox)Result — go to the resultHazard ratio 1.030 95% CI 1.007–1.052

Authors' conclusion

Poor baseline physical functioning associated with premature death in patients with MPA and GPA.

Study context

Population
Patients with antibody-associated vasculitis (AAV) assessed for health-related quality of life (HRQoL) at initial diagnosis using SF-3621 (11.1%) died
Participants
189 patients
Exposure
Lower vs higher baseline SF-36 physical component summary (PCS) and mental component summary (MCS) scores and all-cause mortality
Outcome
All-cause mortality
Methodological detailsmultivariable Cox proportional hazards model, inverse probability of treatment weighting (IPTW)
  • Multivariable Cox proportional hazards model
  • Inverse probability of treatment weighting (IPTW)

Main finding

As reported in the abstract

All-cause mortality per one-unit decrease in SF-36 PCS (multivariable Cox)

Hazard ratio

1.030

95% CI 1.007–1.052

P = 0.041

SF-36 PCS, per one-unit decrease
HR 1.030 (95% CI 1.007–1.052); P = 0.041

Per one-unit decrease, as printed

Observational data: associations, not effects.

Further findings

Mortality with SF-36 PCS <53.75, IPTW analysis in MPA and GPA (subgroup)

HR (95% CI)P value
SF-36 PCS <53.753.249 (1.169–9.033)P = 0.024

Baseline SF-36 scores · initial diagnosis

Median SF-36 PCS
47.5
Median SF-36 MCS
53.3

Deaths during follow-up

Deaths, total
21 (11.1%)
Deaths, MPA
15
Deaths, GPA
6

Correlations of SF-36 PCS and MCS

SF-36 PCS significantly but weakly associated with BVAS, Five-factor score, erythrocyte sedimentation rate (ESR) and CRP
SF-36 MCS not associated with ESR

Original publication

Clinical association of health-related quality of life and mortality in an antineutrophil cytoplasmic antibody-associated vasculitis cohort. Semin Arthritis Rheum. Published 16 December 2023. doi:10.1016/j.semarthrit.2023.152353

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