Table 1:
Clinical and demographic features of the pediatric study subjects extracted from the CHAT dataset.
| Features | Training subset | Validation subset | Test subset |
|---|---|---|---|
| Baseline subjects (n) | 278 (61.64%) | 88 (19,51%) | 85 (18.85%) |
| Non-randomized subjects (n) | 461 (61.06%) | 157 (20.79%) | 137 (18.15%) |
| Follow-up subjects (n) | 249 (61.63%) | 78 (19.31%) | 77 (19.06%) |
| Total subjects (n) | 988 (61.37%) | 323 (20.06%) | 299 (18.57%) |
| Age (years) | 7.00 [2.00] | 7.00 [2.00] | 6.90 [2.00] |
| Females (n) | 477 (48.28%) | 164 (50.77%) | 161 (53.85%) |
| BMI (kg/m2) | 17.31 [5.92] | 17.12 [6.25] | 17.43 [6.04] |
| AHI (e/h) | 2.64 [4.77] | 2.45 [4.77] | 2.32 [5.11] |
| AHI < 1 (e/h) * | 212 (21.46%) | 67 (20.74%) | 65 (21.74%) |
| 1≤AHI<5 (e/h) * | 488 (49.39%) | 167 (51.70%) | 144 (48.16%%) |
| 5≥AHI<10 (e/h) * | 159(16.09%) | 44 (13.62%) | 49 (16.39%) |
| AHI ≥ 10 (e/h) * | 129 (13.06%) | 45 (13.93%) | 41 (13.71%) |
| Baseline ECG segments (n) | 33,402 | 5,350 | 5,059 |
| Non-randomized ECG segments (n) | 53,137 | 9,057 | 7,972 |
| Follow-up ECG segments | 29,587 | 4,519 | 4,442 |
| Total ECG segments (n) | 116,126 | 18,927 | 17,473 |
Data are shown as number (percentage) or median [interquartile range], depending on the feature type. BMI: body mass index; AHI: apnea-hypopnea index; e/h: apneic events per hour.
*
AHI<1 (e/h): no OSA; 1≤AHI<5 (e/h): mild OSA; 5≤AHI<10(e/h): moderate OSA; AHI≤10(e/h): severe OSA.