Table 1.: Demographics and clinical characteristics by gender.

  Males Females P-Value
Number 150 150
Age (years), mean ± s.d. 46.8 ± 10.8 51.7 ± 9.5 < 0.0001
Height (m), mean ± s.d. 1.75 ± 0.09 1.63 ± 0.08 < 0.0001
Weight (kg), mean ± s.d. 125.6 ± 32.3 119.4 ± 29.6 n.s.
BMI (kg/m2), mean ± s.d. 41.1 ± 9.4 45.1 ± 9.8 0.0002
ESS, mean ± s.d. 13.5 ± 5.8 13.5 ± 5.9 n.s.
AHI (events/hour), mean ± s.d. 52.7 ± 38.2 40.9 ± 36.7 0.003
SpO2 nadir (%), mean ± s.d. 71.5 ± 14.0 72.3 ± 15.2 n.s.
Bruxism, number (%) 43 (29%) 34 (23%) n.s.
GERD, number (%) 53 (35%) 52 (35%) n.s.
Insomnia, number (%) 120 (80%) 127 (85%) n.s.
RL symptoms, number (%) 55 (37%) 53 (35%) n.s.

* s.d. = standard deviation; m = meters; kg = kilograms; n.s. = not significant; BMI = body mass index; ESS =Epworth Sleepiness Scale score; AHI = apnea-hypopnea index; SpO2 = oxygen saturation; % = percentage; RL = restless legs.