Table 1. Key Demographic, Physical Examination, and Sleep Study Data.
| Variable | Mean (SD) [Range] | ||
|---|---|---|---|
| Total (n = 65) | POSA (n = 39) | N-POSA (n = 26) | |
| Age, y | 52.4 (11.7) [25.4-4.9] | 51.7 (11.4) [26.7-74.4] | 53.4 (12.2) [25.4-74.9] |
| Sex | |||
| Male | 55 | 32 | 23 |
| Female | 10 | 7 | 3 |
| Race | |||
| White | 39 | 30 | 21 |
| African American | 1 | 0 | 1 |
| Asian | 11 | 9 | 4 |
| Hispanic | 8/65 | 8/39 | 0/26 |
| BMI | 27.2 (3.1) [20.2-33.3] | 27.1 (3.0) [20.2-31.9] | 27.4 (3.2) [20.7-33.3] |
| Tonsil size | 0.82 (0.73) [0-2] | 0.74 (0.75) [0-2] | 0.92 (0.69) [0-2] |
| AHI, events/h | |||
| Total | 28.2 (14.3) [6.4-58.8] | 26.4 (14.9) [6.4-58.8] | 30.9 (13.0) [10.0-53.0] |
| Supine | 40.8 (27.7) [3.1-120] | 45.0 (29.1) [4.7-120] | 34.5 (24.8) [3.1-108] |
| Nonsupine | 18.3 (15.1) [0-59] | 11.3 (12.4) [0-51.3] | 28.6 (12.9) [8.8-59] |
Abbreviations: AHI, apnea-hypopnea index; BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); N-POSA, positional obstructive sleep apnea; POSA, positional obstructive sleep apnea; SD, standard deviation.