Spondyloarthritis & psoriatic arthritis

Where We Live Matters: Varied Disease Burden and Treatment Patterns in Psoriatic Arthritis in the United States

Arthritis RheumatolPublished Cross-sectional study

Main finding · High comorbidity burdenResult — go to the resultAdjusted odds ratio 1.59 95% CI 0.98–2.59

Authors' conclusion

PsA disease characteristics and care vary across the US, with higher-than-expected prednisone use and unequal provider care burden in some regions.

Study context

Population
Patients with PsA in the Rheumatology Informatics System for Effectiveness (RISE) registry, January 2020–March 2023
Participants
32,732 patients
Exposure
Geographic regions of the US
Outcome
Regional distribution of HDA (RAPID3 >12), high comorbidity (RxRisk ≥90th percentile), high ADI (≥80), insurance coverage, prednisone ≥10 mg daily and disease-modifying antirheumatic drug (DMARD) therapies
Methodological detailsregistry-based (RISE), logistic regression
  • Registry-based (RISE)
  • Logistic regression

Main finding

High comorbidity burden

Adjusted odds ratio

1.59

95% CI 0.98–2.59

Midwestvs Northeast
aOR 1.59 (95% CI 0.98–2.59)

As reported in the abstract

Observational data: associations, not effects.

Further findings

Prednisone with csDMARDs

BMI ≥25

BMI ≥25 in the cohort
81.8%
Mean BMI in the Midwest (highest)
32.4 ± SD 7.8

Uveitis

Uveitis in the cohort
1.2%

Concentration of care across RISE practices

Practices caring for half of all Medicaid patients
14 (7.1%)
Practices caring for half of all high-deprivation patients
20 (10.1%)

Original publication

Where We Live Matters: Varied Disease Burden and Treatment Patterns in Psoriatic Arthritis in the United States. Arthritis Rheumatol. Published 28 January 2026. doi:10.1002/art.43377

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