Table 4.
Hematological characteristics of the study population
| Total patients (n = 257) | Male patients (n = 51) | Female patients (n = 206) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ANA/RF (+) (n = 39) |
ANA/RF (−) (n = 218) |
P-value | ANA/RF (+) (n = 4) |
ANA/RF (−) (n = 47) |
P-value | ANA/RF (+) (n = 35) |
ANA/RF (−) (n = 171) |
P-value | |
| White Blood Cell (103/ul) | 5.5 (4.9–7.3) | 5.9 (5.0–7.0) | 0.697 | 6.1 (4.6–7.8) | 5.6 (4.6–6.9) | 0.639 | 5.5 (4.9–6.9) | 6.1 (5.0–7.0) | 0.464 |
| Red Blood Cell (106/ul) | 4.4 (4.2–4.7) | 4.5 (4.2–4.9) | 0.086 | 4.7 (4.1–5.2) | 5.1 (4.9–5.3) | 0.125 | 4.4 (4.2–4.6) | 4.4 (4.2–4.6) | 0.853 |
| Hemoglobin (g/dl) | 13.0 (12.7–14.2) | 13.5 (12.8–14.5) | 0.163 | 14.9 (13.3–15.9) | 15.6 (15.0–16.1) | 0.209 | 13.0 (12.7–14.0) | 13.1 (12.6–13.8) | 0.938 |
| Platelet (103/ul) | 238 (198–300) | 251 (217–278) | 0.463 | 252 (217–272) | 236 (218–265) | 0.623 | 238 (195–300) | 256 (216–285) | 0.306 |
| ESR (mm/hr) | 6 (4–13) | 5 (2–10) | 0.037* | 7 (6–8.8) | 2 (2–4) | 0.001* | 6 (3–14) | 7 (3–12) | 0.447 |
| CRP (mg/dl) | 0.05 (0.03–0.11) | 0.05 (0.04–0.10) | 0.787 | 0.14 (0.07–0.20) | 0.06 (0.04–0.10) | 0.068 | 0.05 (0.03–0.08) | 0.05 (0.04–0.08) | 0.888 |
ANA antinuclear antibody, RF rheumatoid factor, ESR erythrocyte sedimentation rate, CRP C-reactive protein
Differences between group means were tested with Mann-Whitney test: Median (lower quartile - upper quartile)
*Significant difference: p < 0.05