Table 2. Clinical characteristics of rheumatoid arthritis patients.
Clinical data | Parvovirus B19 DNA positive in | Parvovirus B19 DNA negative | |||
---|---|---|---|---|---|
Blood and plasma | Blood | Plasma | |||
WBC (×109 l−1) | Norm. | 5 | 3 | 11 | 46 |
>Norm. | 3 | 3 | 5 | 42 | |
% >Norm. | 37.5 | 50.0 | 31.3 | 47.7 | |
HgB (g l−1) | Norm. | 3 | 4 | 5 | 48 |
<Norm. | 5 | 2 | 11 | 40 | |
% <Norm. | 62.5 | 33.3 | 68.8 | 45.5 | |
ESR (mm h−1) | Norm. | 3 | 3 | 2 | 19 |
>Norm. | 5 | 3 | 14 | 68 | |
% >Norm. | 62.5 | 50.0 | 87.5 | 77.3 | |
CRP (mg l−1) | Norm. | 3 | 2 | 5 | 22 |
>Norm. | 5 | 4 | 11 | 66 | |
% >Norm. | 62.5 | 66.7 | 68.8 | 75.0 | |
Anti-CCP (EU ml−1) | 1–60 | 6 | 4 | 5 | 45 |
>60 | 2 | 2 | 11 | 43 | |
% >60 | 25.0 | 33.3 | 68.8 | 48.9 | |
DAS28 | <5.2 | 4 | 5 | 5 | 43 |
>5.2 | 4 | 1 | 11 | 43 | |
% >5.2 | 50.0 | 16.7 | 68.8 | 50.0 | |
Disease duration (years) | 0–10 | 5 | 2 | 8 | 44 |
>10 | 3 | 4 | 8 | 44 | |
% >10 | 37.5 | 66.7 | 50.0 | 50.0 | |
RF (U ml−1) | 1–100 | 3 | 3 | 9 | 50 |
>100 | 5 | 3 | 7 | 38 | |
% >100 | 62.5 | 50.0 | 43.8 | 44.0 |