Table 1.

Demographic and polysomnographic data

	SCD OSAS (n = 4)	SCD Controls (n = 18)
Age (years)	15 (13 to 17)	14 (7 to 18)
Male, (N, %)	3 (75)	9 (50)
Body mass index Z-score	−0.5 (−3.3 to −0.4)	−0.4 (−3.1 to 1.0)
Apnea hypopnea index (N/h)	6.7 (3.0 to 27.0)	0.3 (0.0 to 1.1)*
Arterial oxygen saturation nadir (%)	80 (69 to 91)	87 (71 to 96)
Peak end-tidal CO2 (mm Hg)	53 (47 to 58)	53 (41 to 61)
Cerebral vasculopathy (N)	0	3

^*P < 0.001. Data presented as median (range) unless otherwise specified.