Table 3. Correspondence ratios between PPD distribution and the vein involved (only in the PPD with VI group; n=35).
| Variable | Type of involved vein | Correlation between involved vein and distribution of PPD | |||||
|---|---|---|---|---|---|---|---|
| GSV | SSV | Combined | Group with positive correlation | Group without positive correlation | p-value | ||
| Distribution of PPD | 60 (65.2) | 32 (34.8) | <0.05 | ||||
| Anterior | 18 (45.0) | 6 (16.7) | 5 (31.3) | ||||
| Medial | 16 (40.0) | 4 (11.1) | 4 (25.0) | ||||
| Posterior | 2 (5.0) | 10 (27.8) | 2 (12.5) | ||||
| Lateral | 4 (10.0) | 16 (44.4) | 5 (31.3) | ||||
Values are presented as number (%). PPD: pigmented purpuric dermatosis, VI: venous insufficiency, GSV: great saphenous vein, SSV: short saphenous vein.