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Lucian Petcu

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Articles signed on Romanian Journal of RHEUMATOLOGY:

SEX RATIO AND AGE IN PATIENTS WITH RHEUMATOID ARTHRITIS. DATA FROM A COHORT IN SOUTH-EAST ROMANIA

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Romanian Journal of Rheumatology, Volume XXIV, No. 4, 2015
ISSN 1843-0791  |  e-ISSN 2069-6086
ISSN-L 1843-0791
DOI: 10.37897/RJR

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SEX RATIO AND AGE IN PATIENTS WITH RHEUMATOID ARTHRITIS. DATA FROM A COHORT IN SOUTH-EAST ROMANIA

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ABSTRACT

Background. Rheumatoid arthritis (RA) epidemiology is characterised by the preference of the disease for women under age of 50, a sex ratio female:male of ≤ 3:1 being classically described, along with a peak for age onset between 50 and 75 years old. The relationship between female sexual hormons and susceptibility of rheumatoid arthritis is not completely understood and regional differences in the prevalence of the disease support the idea of environmental factors influence.
Aim. To evaluate demographic features of patients with rheumatoid arthritis from South-East Romania, living in the climatic, economic and ethnic profile of Constanta county.
Material and method. We included 447 patients (age≥18) with RA (ACR 1987 or ACR/EULAR 2010 diagnosis criteria) admitted in our Rheumatology Department – IInd Internal Medicine Clinic, Sf. Apostol Andrei Emergency Clinical County Hospital Constanta from January 2013 to December 2014. All patients agreed to participate in the study through an informed consent (approved by local ethical comittee) signed at admittion time. All patients underwent a careful clinical, biological and imagistic evaluation.
Results. Our group of patients was a rheumatoid arthritis cohort with 88.4% Caucasian, 380 women (85%) and 67 men (15%), with a female-male ratio (F:M) of more than 5:1 (5.7:1), mean age of our patients was 62.13 ± 11.44 years and a mean age at onset of RA of 51.71±13.67 years, statistically different between men and women (p < 0.001). Sex distribution of rheumatoid arthritis varies with actual age of the patients, significant differences being observed in extreme age categories: < 40 years (F:M = 17:1) and > 70 years (F:M = 4.25:1), age at onset, with smoking status (F:M = 2:1), in early disease (F:M = 3.6:1).
Conclusions. Female:Male ratio increases impresively in RA cases with early onset (<45 years), young man’s hormon constellation being probably a protective factor for the disease. Patients’ age, especially age at onset, seems to be the most important factor that influences sex distribution of rheumatoid arthritis.

Keywords: rheumatoid arthritis, sex ratio, age at onset

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