Univariate and multivariable analyses for correlates of atrial fibrillation (the age, gender and NYHA functional class at the time of the diagnosis were adjusted in the multivariable analysis)
| Variables | Univariate analysis | Multivariable analysis | ||
| OR (95% CI) | p value | OR (95% CI) | p value | |
| All AF (n=77) | ||||
| NYHA ≥ II | 2.30 (1.34 to 3.92) | 0.002 | 1.92 (1.09 to 3.39) | 0.023 |
| LA dimension | 1.18 (1.12 to 1.24) | <0.001 | 1.16 (1.10 to 1.23) | <0.001 |
| LA volume index | 1.10 (1.07 to 1.14) | <0.001 | 1.10 (1.07 to 1.14) | <0.001 |
| Age | 1.07 (1.04 to 1.10) | <0.001 | 1.07 (1.04 to 1.11) | <0.001 |
| Hypertension | 1.37 (0.80 to 2.35) | 0.258 | - | - |
| Pure ApHCM | 0.91 (0.54 to 1.54) | 0.732 | - | - |
| Apex thickness | 1.04 (0.95 to 1.14) | 0.402 | - | - |
| LV ejection fraction | 0.98 (0.95 to 1.02) | 0.343 | - | - |
| New-onset AF (n=26) | ||||
| LA dimension | 1.12 (1.04 to 1.21) | 0.003 | 1.11 (1.03 to 1.20) | 0.006 |
| LA volume index | 1.07 (1.03 to 1.11) | <0.001 | 1.07 (1.03 to 1.11) | 0.001 |
| Age | 1.05 (1.01 to 1.10) | 0.013 | - | - |
| NYHA ≥ II | 2.02 (0.88 to 4.64) | 0.097 | - | - |
AF, atrial fibrillation; ApHCM, apical hypertrophic cardiomyopathy; LA, left atrium; LV, left ventricle; NYHA, New York Heart Association.