Table 2.
Comparison of hematological indices between rheumatoid arthritis and controls.
| Variables | Rheumatoid Arthritis (n = 257) | Healthy Controls (n = 71) | p Value |
|---|---|---|---|
| Whole blood cell counts | |||
| White blood count (×103/µL) | 6.9 ± 2.3 | 5.4 ± 1.3 | <0.001 |
| Hemoglobin (g/dL) | 12.5 ± 1.2 | 12.9 ± 1.2 | 0.012 |
| Platelet (×103/µL) | 264.4 ± 73.4 | 234.1 ± 63.6 | 0.002 |
| Neutrophil (%) | 60.3 ± 10.8 | 53.3 ± 10.4 | <0.001 |
| Lymphocytes (%) | 28.9 ± 9.6 | 36.1 ± 10.0 | <0.001 |
| Neutrophil (×103/µL) | 4.3 ± 1.9 | 2.9 ± 1.0 | <0.001 |
| Lymphocytes (×103/µL) | 1.9 ± 0.7 | 1.9 ± 0.6 | 0.736 |
| Hematological indices | |||
| SII | 697.1 ± 579.4 | 409.1 ± 277.4 | <0.001 |
| NHL score (/g/dL) | 0.207 ± 0.140 | 0.135 ± 0.080 | <0.001 |
| NLR | 2.552 ± 1.673 | 1.693 ± 0.858 | <0.001 |
| PLR | 158.2 ± 93.6 | 134.9 ± 55.2 | 0.046 |
p values were calculated by Student’s t-test. Data were described as mean (standard deviation, SD) for quantitative variables. Abbreviation: SII, systemic immune-inflammation index; NHL, neutrophil-to-hemoglobin and lymphocyte; NLR, neutrophil-to-lymphocyte ratio; PLR, platelet-to-lymphocyte ratio.