Inflammatory Markers and Obstructive Sleep Apnea in Obese Children: The NANOS Study

Table 2

Polysomnographic characteristics in OSA and no-OSA obese children.

	Total (𝑛=204)	No-OSA (𝑛=129)	OSA (𝑛=75)	𝑃 value
AHI (/hrTST)	3.6±9.5	0.6±0.6	9±14.2	<0.001^†
Time in Bed (min)	479.2±45.8	482.8±47	473.1±43.4	0.1
Total sleep time (min)	379.6±70.2	384.1±70.7	372±69.4	0.2
Sleep Efficiency%	78.9+12.8	78.9±12.3	78.9±13.9	0.9
Number of arousals	67.3±62.5	48.2±32.9	99.4±84.1	<0.001^†
Arousal index (/hrTST)	11.2±11.2	7.9±6.1	17±15.1	<0.001^†
Respiratory disturbance index (/hrTST)	6±10.6	1.4±1	14±14.5	<0.001^†
Obstructive RDI (/hrTST)	5.5±10.3	1±0.9	13.3±13.9	<0.001^†
Central RDI (/hrTST)	0.3±1	0.2±0.4	0.6±1.7	0.01^†
Baseline SpO2 (%)	98.1±1.4	98.3±1.3	98±1.7	0.2
Mean SpO2 (%)	96.4±1.5	96.7±1.2	96.1±1.9	0.008^†
Nadir SpO2 (%)	90.5±5.2	91.4±3.5	89.1±7	0.003^†
Time SpO2 < 90%	1.1±7.2	0.5±3.3	2.3±11.4	0.1
Oxygen desaturation index (/hrTST)	2.3±9	0.7±1.2	5.1±14.2	0.001^†
Peak end-tidal CO2 (mmHg)	46.2±6.9	46.1±6.1	46.2±8.3	0.9
Total Sleep time with end-tidal CO2 > 50 mmHg (hours)	3.6±11.8	1.6±5.6	7.1±17.7	0.003^†

†Statistically significant difference.