TABLE 1.

SUBJECT DEMOGRAPHICS FOR STUDY POPULATIONS

Subject Characteristic	Control	OSA
Subjects	14	17
Age, yr	34.4 ± 2.8	42.3 ± 2.4*
Number of units	700	955
Female/male	6/8	2/15
Apnea–hypopnea index, events per hour of sleep	3.7 ± 0.7	54.8 ± 6.1*
Height, cm	169.9 ± 3.2	177.1 ± 2.1
Weight, kg	86.1 ± 7.6	100.7 ± 4.5
Body mass index, kg/m2	29.4 ± 1.9	32.2 ± 1.4
Neck size, cm	38.4 ± 1.2	42.5 ± 0.7*
Number of units per subject	50.0 ± 4.8	56.2 ± 5.8
Inferior margin of geniohyoid muscle, mm	14.5 ± 1.0	16.1 ± 1.1
Inferior margin of genioglossus muscle, mm	23.8 ± 0.9	26.8 ± 1.0*
Genioglossus width, mm	17.8 ± 0.6	18.2 ± 0.5
Modified Borg Scale score, 0–10	2.6 ± 0.4	2.1 ± 0.2

Definition of abbreviation: OSA = obstructive sleep apnea.

The modified Borg Scale was used to measure the “worst level of pain” experienced by each subject during the recording, with 0 = nothing at all and 10 = maximal.

Values represent means ± SEM, unless otherwise specified.

^*P < 0.05.