Table 2.
Rates of PSG Completion, Diagnosis of OSA, and Severity of OSA among Children with Down Syndrome in the Pre- and Postguidelines Era Cohorts.
| Era (Birth Year), n (%) or Median (Range) | |||
|---|---|---|---|
| Characteristic | Preguidelines (2000-2006) | Postguidelines (2007-2012) | P Value |
| Documented PSG | 194 (63.4) | 273 (59.4) | .26 |
| Age at first PSG, ya | 4.5 y (< 1 mo–16.2 y) | 3.6 y (< 1 mo–8.9 y) | <.0001 |
| First PSG by age, ya | <.0001 | ||
| <1 | 12 (6.2) | 44 (16.1) | |
| 1-4 | 101 (52.1) | 184 (67.4) | |
| >4 | 81 (41.8) | 45 (16.5) | |
| OSA | 148 (76.3) | 218 (79.9) | .36 |
| OSA severity (oAHI)b | .50 | ||
| Mild (≥1 and <5) | 87 (60) | 126 (58.1) | |
| Moderate (≥5 and <10) | 31 (21.4) | 40 (18.4) | |
| Severe (≥ 10) | 27 (18.6) | 51 (23.5) | |
Abbreviations: oAHI, obstructive apnea-hypopnea index; OSA, obstructive sleep apnea; PSG, polysomnogram.
a
Among those who received a PSG.
b
Among those with OSA.