Table 1. Basal demographic and clinical characteristics of patients with RA and SpA.
| RA (n=3,147) | SpA (n=6,071) | |||||||
| n | % | Median | IQR | n | % | Median | IQR | |
| Age (year) | 56 | 44-64 | 43 | 36-52 | ||||
| Sex | ||||||||
| Female | 2,502 | 79.5 | 2,709 | 44.6 | ||||
| Age at diagnosis (year) | 43 | 32-52 | 33 | 26-42 | ||||
| Disease duration (month) | 134 | 79-207 | 102 | 55-159 | ||||
| Symptom duration (month) | 152 | 98-247 | 152 | 91-232 | ||||
| BMI (kg/m2) | 27.51 | 24.03-31.64 | 26.78 | 23.71-30.11 | ||||
| Comorbidities | ||||||||
| Hypertension | 960 | 31.2 | 920 | 15.6 | ||||
| Diabetes mellitus | 383 | 12.5 | 453 | 7.7 | ||||
| Obesity | 1,045 | 34.6 | 1,502 | 26 | ||||
| Hyperlipidemia | 504 | 17.6 | 682 | 12.8 | ||||
| CAD | 169 | 5.8 | 123 | 2.6 | ||||
| COPD | 60 | 2.1 | 36 | 0.6 | ||||
| Asthma | 229 | 7.9 | 234 | 4.1 | ||||
| Malignity | 55 | 1.8 | 52 | 0.9 | ||||
| RF positivity | 1,892 | 66.9 | - | - | ||||
| Anti-CCP positivity | 1,397 | 59.2 | - | - | ||||
| HLA-B27 | - | - | 1889 | 51.7 | ||||
| ESR (mm/h) | 33 | 18-53 | 22 | 10-39 | ||||
| CRP (mg/L) | 14 | 5.57-34 | 11 | 3.995-24.7 | ||||
| VAS global | 70 | 50-80 | 70 | 50-80 | ||||
| VAS pain | 75 | 60-85 | 70 | 50-80 | ||||
| VAS fatigue | 70 | 50-80 | 70 | 50-80 | ||||
| HAQ | 0.8 | 0.5-1.25 | 0.6 | 0.35-0.85 | ||||
| Number of swollen joints | 4 | 1-6 | 0 | 0-0 | ||||
| Number of tender joints | 6 | 3-10 | 0 | 0-2 | ||||
| DAS28-ESR | 4.88 | 3.67-5.86 | - | - | ||||
| DAS28-CRP | 4.34 | 3.14-5.4 | - | - | ||||
| CDAI | 23.5 | 16-31 | - | - | ||||
| SDAI | 40 | 26.83-63 | - | - | ||||
| BASDAI | - | - | 6 | 4.4-7 | ||||
| BASFI | - | - | 4.3 | 2.7-6 | ||||
| ASDAS-ESR | - | - | 3.16 | 2.51-3.82 | ||||
| ASDAS-CRP | - | - | 3.535 | 2.855-4.19 | ||||
| RA: Rheumatoid arthritis; SpA: Spondyloarthritis; IQR: Interquartile range; BMI: Body mass index; CAD: Coronary arterial disease; COPD: Chronic obstructive pulmonary disease; RF: Rheumatoid factor; Anti-CCP: Anti-cyclic citrullinated peptide; HLA-B27: Human leukocyte antigen-B27; ESR: Erythrocyte sedimentation rate; CRP: C-reactive protein; VAS: Visual Analog Scale; HAQ: Health Assessment Questionnaire; DAS: Disease Activity Score; CDAI: Clinical Disease Activity Index; BASDAI: Bath Ankylosing Spondylitis Activity Index; BASFI: Bath Ankylosing Spondylitis Functional Index; ASDAS: Ankylosing Spondylitis Disease Activity Scores. | ||||||||