Table 1.
Characteristics of the cohort at baseline and follow-up (n = 12).
| Baseline Median (IQR) | Follow-up Median (IQR) | |
|---|---|---|
| Age (years) | 12.8 (6.1) | 14.3 (6.2) |
| Height z-score | 1.4 (3.3) | 1.6 (3.3) |
| Weight z-score | 3.3 (1.56) | 3.1 (1.7) |
| BMI z-score | 2.6 (0.6) | 2.7 (0.5) |
| Sleep efficiency (%) | 87.6 (15.7) | 87.5 (10.2) |
| Arousal index (events/h)** | 19.2 (22.0) | 7.9 (5.0) |
| Apnea-hypopnea index (events/h)** | 16.0 (13.6) | 1.9 (4.1) |
| Obstructive mixed apnea-hypopnea index (events/h)** | 13.8 (17.3) | 0.90 (2.6) |
| Central apnea-hypopnea index (events/h) | 0.35 (6.1) | 0.80 (1.6) |
| Mean oxygen saturation (%) | 95.8 (4.0) | 97.3 (2.7) |
| Mean carbon dioxide (mmHg)** | 44.2 (4.4) | 40.5 (5.4) |
| Lowest oxygen saturation (%)** | 84.7 (9.2) | 89.9 (3.9) |
| Highest carbon dioxide (mmHg)** | 50.0 (5.8) | 42.7 (9.4) |
Follow-up polysomnography data are from treatment studies where NIV was used during the study. **P < .001. BMI = body mass index, IQR = interquartile ratio, NIV = noninvasive ventilation.