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Quantitative analysis of vascular proliferation detected by CD31 expression of the synovial tissue of the patients
| Parameter | K/L 2 or 3 | K/L 4 | p |
|---|---|---|---|
| Density (blood vessel number/mm2) | 79.0 (25.4, 38.7–119.3) | 46.6 (16.7, 38.6–54.7) | <0.01* |
| Perimeter (total perimeter of blood vessel in μm/mm2) | 7970.5 (2458.4, 4058.7–11882.3) | 5339.9 (1468.6, 4632.1–6047.7) | 0.04* |
Data are presented as the mean (standard deviation [SD], 95% confidence interval [CI] of the mean)
* p value is significant
