Bivariate correlation between absolute maximal voltage of either the Q, R or S wave in each lead and the chest wall–left ventricular distance
| CWLVMEAN | |||
| All (N=239) | Male (n=196) | Female (n=43) | |
| aVL | 0.26 (R)*** | 0.20 (R)** | – |
| I | 0.32 (R)*** | 0.25 (R)*** | – |
| aVR | – | – | – |
| II | – | −0.23 (R)** | – |
| aVF | −0.19 (R)** | −0.28 (R)*** | – |
| III | −0.18 (R)** | −0.24 (R)** | – |
| V1 | – | −0.25 (S)** | – |
| V2 | – | −0.17 (S)* | – |
| V3 | – | −0.17 (S)* | – |
| V4 | – | – | – |
| V5 | 0.18 (R)** | – | 0.42 (R)** |
| V6 | 0.18 (R)** | – | 0.34 (R)* |
The strongest correlation to either of R/r’ (R) or S/Q (S) in each lead is shown, after negative deflections (S and Q) were converted to absolute (positive) numbers. Thus, a negative correlation always implies a decrease in the respective lead voltage with increasing distance between the heart and chest wall (CWLV).
–, not statistically significant.
*P<0.05, **P<0.01, ***P<0.001.