Table 4.
Correlation between diameter of PFO and characteristics of ischemia lesion
| Ischemia lesion characteristics | PFO ≥ 4 mm (n = 37) | 4 mm ≥ PFO > 2 mm (n = 24) | PFO < 2 mm (n = 10) | Test | χ2 | P value |
|---|---|---|---|---|---|---|
| Location, n (%) | Chi-square test | 0.974 | 0.614 | |||
| Unilateral | 28 (75.7) | 17 (70.8) | 6 (60.0) | |||
| Bilateral | 9 (24.3) | 7 (29.2) | 4 (40.0) | |||
| Left or right hemispheres, n (%) | Chi-square test | 0.895 | 0.639 | |||
| Left | 16 (43.2) | 13 (54.2) | 4 (40.0) | |||
| Right | 21 (56.8) | 11 (45.8) | 6 (60.0) | |||
| Number, n (%) | Chi-square test | 9.655 | 0.008 | |||
| Single | 12 (32.4) | 15 (62.5) | 8 (80.0) | |||
| Multiple | 25 (67.6) | 9 (37.5) | 2 (20.0) | |||
| Circulation, n (%) | Chi-square test | 0.825 | 0.662 | |||
| Anterior | 20 (54.1) | 14 (58.3) | 7 (70.0) | |||
| Posterior | 17 (45.9) | 10 (41.7) | 3 (30.0) |