Table 2. Correlation between P-wave indexes, echocardiographic parameters, and CHA2DS2-VASc score.
| Variable | Variation | Median | Mean (SD) | RHO | p-Value |
|---|---|---|---|---|---|
| Mean PWD (ms) | 63–153.1 | 110.3 | 110.3 (14.2) | 0.084 | 0.167 |
| P dispersion (ms) | 16–108 | 44 | 46.4 (13.5) | 0.026 | 0.669 |
| P amplitude (mm) | 0.2–2.6 | 1.1 | 1.1 (0.4) | (-0.141) | 0.020 |
| PRi (ms) | 88–276 | 172 | 174.4 (29.9) | 0.130 | 0.032 |
| PPRi | 0.3–1.2 | 0.7 | 0.7 (0.1) | (-0.078) | 0.200 |
| P-wave peak time (ms) | 28–100 | 60 | 59.0 (13.2) | (-0.027) | 0.656 |
| P SD (ms) | 4.3–29.3 | 14.2 | 14.4 (4.1) | 0.053 | 0.379 |
| P Variability | 0.03–0.24 | 0.13 | 0.13 (0.04) | 0.027 | 0.662 |
| PVL1 (mm) | 0.3–2.2 | 0.8 | 0.8 (0.3) | (-0.191) | 0.002 |
| LA (mm) | 25–57 | 40 | 40.1 (5.1) | 0.301 | <0.001 |
| LVEF (%) | 22–79 | 62 | 57.9 (11.0) | (-0.344) | <0.001 |
| LV (mm) | 36–88 | 50 | 51.6 (6.9) | 0.197 | 0.001 |
| LV mass (g) | 36–464 | 198 | 209.5 (63.3) | 0.261 | <0.001 |
| LV indexed mass (g/m2) | 34–243 | 113.1 | 117.2 (31.6) | 0.340 | <0.001 |
LA: left atrium; LV: left ventricle; LVEF: left ventricular ejection fraction; PPRi: P/PR ratio; PRi: PR interval; PVL1: p-wave voltage in lead I; PWD: P-wave duration; RHO: Spearman’s rank correlation coefficient; SD: standard deviation. Statistically significant values are indicated in bold.