Table 4: Chi-square test (independent variable, IV): type of atrial fibrillation (parox/pers), Vitamin-K antagonists versus non-vitamin K antagonists, rhythm at TEE, hypertension; dependent variable: spontaneous echo contrast (SEC).
IV | Chi square test iv | Strength of association |
Type of atrial fibrillation | X2type of AF (1, N = 540) = 47.94, p < 0.001** | Φ = 0.30 (9%) |
OAC vs. NOAC | X2OAK vs NOAK (1, N = 540) = 5.32, p = 0.021* | Φ = 0.13 (2%) |
Rhythm at TEE | X2rhythm at TEE (1, N = 541) = 41.52, p < 0.001** | Φ = 0.28 (8%) |
Hypertension | X2HT (1, N = 538) = 10.36, p < 0.001** | Φ = 0.14 (2%) |
Note: * = Significant and ** = Highly significant.