Table 1.

Subject characteristics and concentration of orexin-A 

Parameters	Sleep Disordered	Control	P
Age (yrs)	50.8 ± 2.9	49.9 ± 4.7	0.708
Body weight (kg)	63.4 ± 6.9	59.8 ± 7.2	0.131
Height (cm)	164 ± 3	161 ± 4	0.055
Glucose (mmol/L)	4.78 ± 0.58	4.96 ± 0.61	0.332
ETCO2 (mmHg)	25.4 ± 3.3	26.4 ± 3.2	0.327
Liquid volume (mL)	405 ± 58	393 ± 61	0.536
Orexin-A (pg/mL)	72.2 ± 18.2	36.2 ± 14.2	< 0.001*

Data are presented as means ± SD. ETCO₂ was recorded before verbal commands. Liquid volume data collection started from the time entering the room until the end of observation. ^*P < 0.05 versus control