Table 1.
Technical specifications and ECG annotation statistics of publicly available ECG databases. Freq, sampling frequency (Hz); Ch, no. of ECG channels.
| Database | Ch |
Freq (Hz) |
No. samples |
Sample length |
Rhythm classes |
No. subjects |
Context | Remark |
|---|---|---|---|---|---|---|---|---|
| AFDB (9) | 2 | 250 | 23 | 10 h | 4 | 25 | ✗ | Continuous, controlled environment |
| MITDB (10) | 2 | 360 | 48 | 30 min | 15 | 47 | ✗ | Continuous, controlled environment |
| NSRDB (17) | 2 | 128 | 18 | 24 h | 1 | 18 | ✗ | Continuous, ambulatory |
| DeepQ (14) | 1 | 250 | 897 | 5 min | 8 | 299 | ✗ | Intermittent, controlled environment |
| OA-ADB (13) | 6 | 400 | 2,000 | 30 s | 15 | 200 | ✗ | Continuous, ambulatory, patient-operated |
| CinC2017 (12) | 1 | 300 | 8,528 | 9–60 s | 4 | – | ✗ | Intermittent, patient-operated |
| CACHET-CADB | 1 | 1,024 | 1602 | 10s | 4 | 24 | ✓ | Continuous, ambulatory, patient-operated |