Table 1: Demographic, clinical and serological data of the studied groups.

Parameters RA patients Healthy controls P value
Gender (female no. & %) 75(90.4%) 18 (90%) NS*
Age(year) 37.59±8.35 36.07±7.71 NS
BMI(kg/m2) 28.22±6.49 29.15±4.64 NS
Disease duration(month) 38.38±16.77 ----- ---
ESR(mm/hour) 40.07± 23.04 14.55±7.85 0.000
CRP(mg/dl) 14.98± 19.42 2.60± 0.79 0.005
RF(IU/dl) 53.14 ± 57.16 9.95± 3.28 0.001
ACPA(U/dl) 24.74± 29.84 2.59± 1.23 0.001
ESM1(pg./ml) 2652.25±2803.40 546.74±181.64 0.000
DAS28 score 3.69±1.19 ----------------- ---------
HAQ-DI 1.36±1.12 ------------------- ----------
Modified Larsen score 1.66±1.04 -------------------- -----------

BMI = Body Mass Index, ESR = Erythrocyte Sedimentation Rate, CRP = C Reactive Protein, RF = Rheumatoid Factor, ACPA = Anti-Citrullinated Peptide Antibody, ESM-1 = Endothelial Cell Specific Molecule 1, DAS = Disease Activity Score. *= Chi- Square test, HAQ-DI = The Health Assessment Questionnaire Disability Index.