Clinical Study
Heartbeat Cycle Length Detection by a Ballistocardiographic Sensor in Atrial Fibrillation and Sinus Rhythm
Table 2
Filtering of the measured BCG during AF and SR by the quality index with remaining analyzable episodes and corresponding correlation coefficient.
| Quality index | Atrial fibrillation | Sinus rhythm | | % | | 95% CI | | % | | 95% |
| >0.1 | 4317 | 100 | 0.70 | 0.68 to 0.71 | 2445 | 100 | 0.75 | 0.73 to 0.77 | >0.15 | 4301 | 100 | 0.70 | 0.69 to 0.72 | 2440 | 100 | 0.76 | 0.74 to 0.78 | >0.2 | 4071 | 94 | 0.72 | 0.71 to 0.74 | 2359 | 96 | 0.79 | 0.77 to 0.80 | >0.25 | 3468 | 80 | 0.76 | 0.74 to 0.77 | 2176 | 89 | 0.85 | 0.83 to 0.86 | >0.3 | 2711 | 63 | 0.83 | 0.82 to 0.84 | 1933 | 79 | 0.901 | 0.9 to 0.92 | >0.35 | 2088 | 48 | 0.87 | 0.86 to 0.88 | 1670 | 68 | 0.94 | 0.93 to 0.94 | >0.4 | 1606 | 37 | 0.89 | 0.88 to 0.90 | 1410 | 58 | 0.95 | 0.95 to 0.96 |
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