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Abstract Number: 2024

Prevalence of Rheumatoid Arthritis in French West Indies, an African Ancestry Population. the Eppra Study

Michel De Bandt1, Rishika Banydeen2, Lauren Brunier3, Katleen Polomat4, Veronique Dehlinger5, Serge Arfi4, Christophe Deligny4, Benedicte Garnery6, Helene Cormier7, Fabienne Dubreuil8, Patrick Numeric9, Danielle Dufrenot10, Sabine Molcard7, Loic Brithmer7, Olivier Fuhrer7, Lucien Louis-Joseph11, Sylvie Merle2 and Georges Jean-Baptiste5, 1CHUM de Martinique, Unit of rheumatology, Fort de France, France, 2Hôpital universitaire P Zobda-Quitman, CHU de Martinique,, Unit of epidemiology and biostatistics, Fort de FRance, France, 3CHUM de Martinique,, Unit of rheumatology, CHUM, 97200 Fort de France, France, 4CHUM de Martinique,, unit of internal medicine, Fort de France, France, 5CHUM de Martinique,, Unit of rheumatology, CHUM, Fort de France, France, 6Hôpital universitaire P Zobda-Quitman, CHU de Martinique, Unit of internal medicine, Fort de France, France, 7Hôpital universitaire P Zobda-Quitman, CHU de Martinique, Unit of rheumatology, Fort de France, France, 8Hôpital universitaire P Zobda-Quitman, CHU de Martinique,, Unit of rheumatology, Fort de FRance, France, 9route de Chateauboeuf, 97200; French West Indies, Unit of rheumatology, CHUM, Fort de France, France, 10Hôpital universitaire P Zobda-Quitman, CHU de Martinique, Unit of rheumatology, Fot de France, France, 11Hôpital universitaire P Zobda-Quitman, CHU de Martinique, Unit of rheumatology, Fort de FRance, France

Meeting: 2014 ACR/ARHP Annual Meeting

Keywords: Rheumatoid arthritis (RA)

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Session Information

Title: Epidemiology and Public Health (ACR): Rheumatoid Arthritis Pathogenesis and Treatment

Session Type: Abstract Submissions (ACR)

Background/Purpose

Rheumatoid arthritis (RA) is a disabling chronic disease, regarded as the most frequent inflammatory rheumatism in adults, with a prevalence estimated between 0.3 and 1 %, and a feminine ascendancy. In metropolitan France this prevalence is estimated from 0.3 % to 0.5% of the general population. No precise data is available for French West Indies, and the prevalence of RA in this population of African ancestry is poorly evaluated.

Methods

The objective of the study is to estimate RA prevalence in the FWI by a census forward-looking epidemiological survey in the hospital and liberal sectors for one year duration. It is a unique tour with clinical examination, self-administered questionnaires and declaration. Secondary objectives are description of clinical and socio economical aspects of RA and cardiovascular comorbidities. We present the results for Martinique. Our survey was widely distributed (radio, press, patients’ associations…) to ensure a good completeness. Data were analysed using SAS 9.3 software (SAS Institute Inc., Cary, NC, USA). Throrough descriptive analysis of collected variables was conducted. Crude prevalence rates were adjusted to a standard population of Martinique (nationwide census in 2010). The 95% CIs were calculated using the Poisson distribution.

Results

Our completeness is good. 538 RA were collected, giving a prevalence in Martinique of 0.184% of the adult population (290 000), respectively 0.049 for men and 0.292 for women. 44% of these patients are treated in private practice and 56% in hospital. This cohort is composed of 88% women and 12% men; 92% were born in Caribbean and 7.7% elsewhere. Patients self declared of Afro Caribbean origin in 92.7%, Caribbean White in 1.7%, caucasian in 3% and other in 2.1%. Their mean disease duration was 9.7+10 years. RF and ACPA were positive in 82.2% (FR+ 392, ACPA+349, 35% low level, 65% high level) : CCP+FR+ in 306, FR+CCP- in 77, FR-CCP+ in 41, FR-CCP- in 96. 17% had extra articular manifestations. ACR1987 and ACR2010 criteria were pos in 94.4% and 78%. HAQ was <1 in 74%, >1and <2 in 20% and >2 in 3%. DAS28 were respectively <2.6 in 59%, <3.2 in 15.4%, <5.1 in 23% and >5.1 in 3%. Less than 5% are ever smoker. Parodontopathy is infrequent. Cardiovascular risk factors were noticed in 89,4% with a mean of 2 CVRF beside RA.

Conclusion

This work clarifies the prevalence of RA in this population of African origin. Some characteristics as: reduced prevalence, strong female representation, strong seropositivity, high levels of anti-CCP, no tobacco, differentiate our patients from other populations and evoke another etiology than tobacco.


Disclosure:

M. De Bandt,
None;

R. Banydeen,
None;

L. Brunier,
None;

K. Polomat,
None;

V. Dehlinger,
None;

S. Arfi,
None;

C. Deligny,
None;

B. Garnery,
None;

H. Cormier,
None;

F. Dubreuil,
None;

P. Numeric,
None;

D. Dufrenot,
None;

S. Molcard,
None;

L. Brithmer,
None;

O. Fuhrer,
None;

L. Louis-Joseph,
None;

S. Merle,
None;

G. Jean-Baptiste,
None.

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