Table 1 Demographic characteristics in children with and without OSA

Age (years)

7.14±1.00

7.04±0.99

0.14

Gender (% male)

58.9

55.5

Ethnicity

White Caucasian %

72

63.3

African American %

28

36.7

BMI z-score

0.81±1.24

1.23±1.38

0.002

SBP (mmHg)

105.46±10.98

105.86±8.05

0.44

DBP (mmHg)

61.80±7.65

63.96±5.53

0.11

Sleep latency (min)

23.76±23.99

19.45±20.71

0.02

REM latency (min)

151.88±62.77

155.24±80.95

0.33

TST (min)

468.77±44.90

469.28±55.29

0.46

Sleep efficiency (%)

88.79±7.89

89.35±9.80

0.28

Stage 1 (% TST)

6.08±4.61

6.05±5.85

0.48

Stage 2 (% TST)

46.32±12.73

43.62±7.93

0.002

Slow wave sleep (% TST)

27.67±9.43

28.91±8.08

0.07

REM sleep (%TST)

20.68±8.35

20.13±10.87

0.30

AHI (h-1 TST)

0.63±0.49

8.28±9.27

<0.0001

Apnea index (h-1 TST)

0.44±0.96

2.53±4.76

<0.0001

Arousal index (h-1 TST)

10.06±7.25

13.37±7.82

<0.0001

Mean SaO2 (%)

97.21±4.82

96.24±2.23

0.0006

Lowest SaO2 (%)

92.66±3.85

86.02±9.10

<0.0001