TABLE 2.
Comparisons of demographics, clinical data, and laboratory tests between the active group and remission group of patients with AS
| Items | Active AS (N = 60) | Remission AS (N = 76) | t/χ2/Z | p value |
|---|---|---|---|---|
| Age (year) | 34.00 (26.25, 42.75) | 32.50 (27.00, 42.00) | −0.303 | 0.762 |
| Sex, No. (%) | ||||
| Female | 6 (10.00) | 12 (15.79) | 0.979 | 0.323 |
| Male | 54 (90.00) | 64 (84.21) | ||
| WBC (×109/L) | 7.10 (6.30, 8.30) | 6.47 (5.58, 7.68) | −2.724 | 0.006 |
| Neutrophils (×109/L) | 4.83 ± 1.33 | 3.79 ± 1.12 | 4.958 | <0.001 |
| Lymphocytes (×109/L) | 1.86 (1.57, 2.12) | 2.11 (1.71, 2.65) | −2.908 | 0.004 |
| Monocytes (×109/L) | 0.48 (0.38, 0.57) | 0.42 (0.34, 0.50) | −2.778 | 0.005 |
| RDW (%) | 13.30 (12.60, 14.13) | 13.30 (12.80, 14.45) | −0.509 | 0.611 |
| PLT (×109/L) | 273.57 ± 50.47 | 223.17 ± 52.01 | 5.684 | <0.001 |
| NLR | 2.50 (1.99, 3.12) | 1.68 (1.36, 2.07) | −5.807 | <0.001 |
| PLR | 153.33 ± 47.73 | 107.17 ± 32.93 | 6.387 | <0.001 |
| SII (×109/L) | 650.74 (555.31, 883.87) | 375.35 (294.66, 465.03) | −7.534 | <0.001 |
| CRP (mg/L) | 26.05 (15.75, 56.50) | 13.30 (6.72, 17.90) | −4.863 | <0.001 |
| ESR (mm/h) | 23.00 (14.25, 51.75) | 14.00 (7.00, 28.25) | −3.333 | 0.001 |
| BASDAI | 4.60 (4.20, 5.28) | 3.40 (3.00, 3.70) | −9.856 | <0.001 |
| HLA‐B27 positive rate, No. (%) | 48 (80.00) | 62 (81.58) | 0.054 | 0.816 |
| Disease duration (year) | 4.00 (1.00, 10.00) | 5.50 (2.00, 10.00) | −0.782 | 0.434 |
Abbreviations: AS, ankylosing spondylitis; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C‐reactive protein; ESR, erythrocyte sedimentation rate; HLA, human leukocyte antigen; NLR, neutrophil‐to‐lymphocyte ratio; PLR, platelet‐to‐lymphocyte ratio; PLT, platelet; RDW, red blood distribution width; SII, systemic immune‐inflammation index; WBC, white blood cell.