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Updated: Jul 13, 2026

Erosion Identification in Metacarpophalangeal Joints in Rheumatoid Arthritis using High-Resolution Peripheral Quantitative Computed Tomography
Published on: October 6, 2023
Prevalence of rheumatoid arthritis in Tucumán, Argentina
Alberto Spindler1, Verónica Bellomio, Alberto Berman
1The Tucamán Rheumatology Society and the Rheumatology Postgraduate Department, School of Medicine, Universidad Nacional de Tucumán, Argentina. albertospindler@hotmail.com
Objective:
To ascertain the prevalence of rheumatoid arthritis (RA) in Tucumán, Argentina.
Methods:
The study was conducted between January 1, 1998, and December 31, 1999, in Tucumán province in northwest Argentina. Outpatient and hospitalization medical records for all patients with RA aged > or = 16 years were reviewed. Diagnosis was by 1987 American College of Rheumatology (ACR) criteria for RA and the population data were based on the 1991 national census. Prevalence rates, with 95% CI, were calculated using the number of San Miguel de Tucumán residents who fulfilled the 1987 ACR criteria for RA as numerator, and the city population aged > or = 16 as denominator. Crude and age-specific prevalence rates were calculated as number of cases/1,000 inhabitants.
Results:
We identified 695 cases of RA. Sex-specific and overall prevalence rates (per 1,000) were 1.97 (95% CI 1.8-2) for all, 0.6 (95% CI 0.49-0.73) for men, 3.2 (95% CI 2.9-3.5) for women.
Conclusion:
Prevalence of RA is low in residents of Tucumán, Argentina, and comparable with rates observed in epidemiological surveys from Southern European countries.
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