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Table 1 Baseline characteristics of the early arthritis population: RA and UA patients

From: Antibodies to mutated citrullinated vimentin and disease activity score in early arthritis: a cohort study

Baseline characteristics RA (n = 123) UA (n = 39) P value
Age (years)a 56.4 ± 15.0 53.8 ± 14.0 NS
Female (%)b 86 (69.9) 26 (66.7) NS
Disease duration (years)c 0.4 (0.3 to 0.6) 0.4 (0.3 to 0.8) NS
ESR (mm/hour)a 36.7 ± 24.4 23.7 ± 21.0 <0.005
CRP (mg/dl)c 19.5 (6.5 to 45.5) 6 (2 to 15) <0.005
Anti-CCP2 positive (%) 68 (55.3) 3 (7.9) <0.005
Anti-MCV positive (%) 73 (59.3) 3 (7.7) <0.005
DAS28 scorea 5.1 ± 1.2 4.3 ± 1.2 <0.01
Sharp-van der Heijde scorec 2 (0 to 6) 0 (0 to 1) <0.01
HAQ scorea 1.1 ± 0.7 0.8 ± 0.6 p < 0.05
  1. Data are expressed as mean ± standard deviation or as median (Interquartile range). aTested using Student's t-test. bTested using the χ2 test. cTested using the Mann Whitney U-test. CCP2, second-generation cyclic citrullinated peptide; CRP, C-reactive protein; DAS28, Disease Activity Score of 28 joints; ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire; MCV, mutated citrullinated vimentin; NS, not significant; RA, rheumatoid arthritis; UA, undifferentiated arthritis.