Table 3. Patient demographic and clinical characteristics.
| Control (n = 10) | ERA (n = 44#) | RA (n = 10) | OA (n = 19) | |
| Age (years) | 33.1±8.2 | 44.1±14.7 | 57.0±10.7 | 71.4±9.9 |
| Sex (M/F) | 4/6 | 3/41 | 1/9 | 8/11 |
| Anti-RF+ pos/neg | ND | 4/31 | 6/2 | 0/16 |
| Anti-CCP+ | ND | ND | 9/25 | ND |
| Mean TJC | ND | 7.9±7.4 (n = 49) | ND | ND |
| Mean SJC | ND | 6.3±7.1 (n = 49) | ND | ND |
| Mean HAQ score | ND | 0.6±0.65 (n = 48) | 1.73±±0.33 (n = 6) | ND |
| Mean MDGA score | ND | 3.8±2.5 (n = 49) | 7.60±2.77 (n = 4) | ND |
| Mean ESR (mm/hr) | ND | 17.6±24.1 (n = 46) | 30.2±15.5 (n = 6) | 16.8±13.4 (n = 14) |
| CRP (mg/L) | ND | 11.9±32.6 (n = 42) | 16.9±18.1 (n = 8) | 4.3±2. 8 (n = 17) |
| WBC (×109/L) | ND | 7.1±2.3 (n = 46) | 7.60±2.76 | 7.91±2.05 |
| % on corticosteroids | ND | 20% (n = 40) | 37.5% (n = 8) | 0% (n = 11) |
| % on MTX | ND | 45% (n = 40) | 66.7 (n = 9) | 0% (n = 11) |
RF ∼ rheumatoid factor- negative result is <20 IU/ml; CCP ∼ anti-cyclic citrullinated peptide antibody positive; TJC ∼ tender joint count; SJC ∼ swollen joint count; HAQ ∼ Health Assessment Questionnaire; MDGA ∼ physician's global assessment, ESR ∼ erythrocyte sedimentation rate; CRP ∼ C Reactive protein; WBC ∼ white blood cell count; corticosteroids included prednisone and florinef;
#
∼ 5 patients were sampled on 2 separate occasions.
ND ∼ not determined.
*
data are shown as mean±SD.