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Correlation between diameter of PFO and ischemia lesion positivity
| PFO diameter | Ischemia lesion, n (%) | Test | χ2 | P value | |
|---|---|---|---|---|---|
| Yes | No | ||||
| PFO ≥ 4 mm | 37 (94.9) | 2 (5.1) | Chi-square test for trend | 24.22 | < 0.001 |
| 4 mm ≥ PFO > 2 mm | 24 (68.6) | 11 (31.4) | |||
| PFO < 2 mm | 10 (38.5) | 16 (61.5) | |||
| sum | 71 (71.0) | 29 (29.0) | |||
