Table 1.
Characteristics of patients with rheumatoid arthritis (RA) and ankylosing spondylitis (AS) in southwest China. Data were given as median (IQR).
| Characteristics | Number of Patients (%) or median (IQR) | |
|---|---|---|
| RA, n = 40 | AS, n = 35 | |
| Female/male | 32/8 | 8/27 |
| Age, yrs | 42 (37, 49) | 37 (29, 44) |
| Present or past smokers (%) | 6 (15.0) | 24 (68.6) |
| Symptom duration, yrs | 1 (1, 3) | 5 (2, 10) |
| CRP, mg/L | 6.9 (2.7, 12.8) | 13.1 (6.8, 22.4) |
| ESR, mm/h | 32.0 (15.0, 67.0) | 46.5 (28.0, 72.8) |
| DAS28-ESR score | 4.3 (3.4, 5.2) | NA |
| BASDAI score | NA | 3.0 (2.4, 4.3) |
| BASFI score | NA | 1.7 (0.8, 3.2) |
| BASMI score | NA | 1.0 (0, 3.0) |
IQR: interquartile range; NA: not applicable; CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; DAS28-ESR: Disease Activity Scores 28 using ESR; BASDAI: Bath Ankylosing Spondylitis (BAS) Disease Activity Index; BASFI: BAS Functional Index; BASMI: BAS Metrology Index.