Table 1.
Demographic characteristics and sleep parameters for children recruited to the study.
| Controls (n=53) | OSA (n=43) | |
|---|---|---|
|
| ||
| Age, mean±SD, years | 10.0±2.3 | 9.0±2.6 |
| Sex | ||
| Male, n (%) | 22 (42%) | 16 (37%) |
| Race, n (%)* | ||
| Black | 13 (24%) | 20 (47%) |
| Caucasian | 37 (70%) | 20 (47%) |
| Other | 3 (6%) | 3 (6%) |
| BMI, mean±SD | 20.1±4.8 | 20.4±5.3 |
| BMI Z score, mean±SD, kg/m2 | 0.8±0.9 | 0.9±1.2 |
| Total sleep time, min, mean±SD | 522.8±41.4 | 528.6±36.8 |
| Sleep efficiency, % mean±SD | 81.4±8.6 | 80.8±8.0 |
| % Time in Stage 1, mean±SD | 3.1±1.2 | 3.0±1.2 |
| % Time in Stage 2, mean±SD | 46.2±7.3 | 45.9±6.3 |
| % Time in Stage 3, mean±SD | 1.9±0.8 | 1.8±0.6 |
| % Time in Stage 4, mean±SD | 29.3±7.3 | 27.8±6.0 |
| Arousal index, mean±SD* | 9.7±2.6 | 13.9±7.4 |
| Obstructive index, mean±SD* | 0.3±0.3 | 9.8±9.2 |
| Peak end-tidal CO2, mean±SD | 49.3±3.1 | 51.0±7.2 |
| Obstructive hypopnea index, mean±SD | 0.9±0.0 | 0.9±0.0 |
| SBP, mm Hg, mean±SD | 105.9±10.2 | 103.3±10.6 |
| SBP %, mean±SD | 65.5±25.9 | 61.3±28.0 |
| DBP, mm Hg, mean±SD | 60.5±6.8 | 59.2.3±6.3 |
| DBP %, mean±SD | 50.2±20.8 | 50.4±19.1 |
| AHI, mean±SD* | 0.8±1.4 | 10.3±9.1 |
| % Avg Oxygen, REM, mean±SD | 97.5±1.5 | 97.7±1.2 |
| % Avg Oxygen, NREM, mean±SD | 97.1±1.3 | 97.4±1.2 |
| % time with CO2<50mmHg | 50.0±35.7 | 55.7±35.6 |
| Cholesterol Level | 157.8±27.3 | 150.1±20.6 |
| HDL | 51.9± 11.8 | 47.6±10.6 |
| LDL | 89.7±26.7 | 88.1±23.2 |
| Triglycerides | 72.7±41.5 | 59.3±32.5 |
n=number, SD=standard deviation
BMI = Body mass index, SBP = systolic blood pressure, DBP = diastolic blood pressure, AHI = apnea hypopnea index, HDL= high density lipoprotein, LDL= low density lipoprotein Other race includes Hispanic, Asian, mixed race and those specified as “Other” in the medical record
*
p<0.05 comparing control vs. OSA groups