Table 1 Correlation and root mean squared error (RMSE) statistics of the digitised results from 923 standard 3 by 4 ECG images and the ground truth digital ECG before image thresholding (validation 1).
From: A fully-automated paper ECG digitisation algorithm using deep learning
Lead name | Correlation | Root mean squared error | ||||||
|---|---|---|---|---|---|---|---|---|
Average | SD | p-value | 95% confidence interval | Average | SD | p-value | 95% confidence interval | |
I | 0.909 | 0.196 | \(<0.001\) | 0.896–0.921 | 0.098 | 0.154 | \(<0.001\) | 0.088–0.108 |
II | 0.974 | 0.085 | \(<0.001\) | 0.968–0.979 | 0.052 | 0.051 | \(<0.001\) | 0.049–0.056 |
V1 | 0.966 | 0.088 | \(<0.001\) | 0.961–0.972 | 0.048 | 0.057 | \(<0.001\) | 0.045–0.056 |
V2 | 0.952 | 0.134 | \(<0.001\) | 0.943–0.961 | 0.071 | 0.113 | \(<0.001\) | 0.064–0.078 |
V3 | 0.934 | 0.160 | \(<0.001\) | 0.924–0.945 | 0.090 | 0.133 | \(<0.001\) | 0.081–0.098 |
V4 | 0.928 | 0.163 | \(<0.001\) | 0.917–0.938 | 0.090 | 0.102 | \(<0.001\) | 0.083–0.096 |
V5 | 0.946 | 0.133 | \(<0.001\) | 0.937–0.955 | 0.078 | 0.077 | \(<0.001\) | 0.073–0.083 |
V6 | 0.973 | 0.092 | \(<0.001\) | 0.967–0.979 | 0.062 | 0.064 | \(<0.001\) | 0.058–0.066 |
