Table 1.
Demographic data and clinical characteristics of study participants.
| Characteristic | Overall mean ± SD n (%) | Non-OSA mean ± SD n (%) | OSA mean ± SD n (%) | p |
|---|---|---|---|---|
| Patients (No. (%)) | 157 (100.0) | 60 (38.2) | 97 (61.8) | NA |
| Age (y) | 45.3 ± 13.5 | 39.5 ± 14 | 48.9 ± 11.9 | 0.01 |
| Gender: | ||||
| Male | 96 (61.2) | 33 (55.0) | 63 (65.0) | 0.21 |
| Female | 61 (38.9) | 27 (45.0) | 34 (35.1) | |
| Smokers | 27 (17.2) | 12 (20.0) | 15 (15.5) | 0.46 |
| Ex-smokers | 49 (31.2) | 13 (21.7) | 36 (37.1) | 0.04 |
| Snoring: | ||||
| Yes | 122 (77.7) | 34 (56.7) | 88 (90.7) | 0.01 |
| No | 23 (14.7) | 18 (30.0) | 5 (5.2) | |
| Unknown | 12 (7.7) | 8 (13.3) | 4 (4.1) | |
| AHI (median, IQR) | 11.2 (1.7–32.4) | 0.4 (0.0–2.8) | 26.8 (12.4–45.7) | 0.01 |
| % of sleep time with O2 saturation below 90%, median (IQR) | 1.4 (0.0–25.9) | 0 (0–0.5) | 7.6 (0.9–45.5) | 0.01 |
| Weight (kg) | 97 ± 29.2 | 78.3 ± 18.5 | 108.5 ± 28.8 | 0.01 |
| Height (cm) | 164 ± 10.5 | 164 ± 10.3 | 164 ± 10.7 | 0.97 |
| BMI (kg/m2) | 37.4 ± 15.6 | 29.1 ± 7.1 | 42.5 ± 17.1 | 0.01 |
| Neck circumference (inches) | 15.9 ± 2 | 14.8 ± 1.7 | 16.6 ± 1.9 | 0.01 |
| ESS score | 12 ± 6.1 | 10.4 ± 6.1 | 12.9 ± 6 | 0.01 |
| BQ score | ||||
| High risk | 120 (76.4) | 32 (53.3) | 88 (90.7) | 0.01 |
| Low risk | 37 (23.6) | 28 (46.7) | 9 (9.3) | |
| Allergic rhinitis | 86 (54.8) | 35 (58.3) | 51 (52.6) | 0.50 |
| Bronchial asthma | 81 (51.6) | 33 (55.0) | 48 (49.5) | 0.50 |
| Diabetes mellitus | 52 (33.1) | 16 (26.7) | 36 (37.1) | 0.18 |
| Hypertension | 72 (45.9) | 17 (28.3) | 55 (56.7) | 0.01 |
| Stroke | 10 (6.4) | 2 (3.3) | 8 (8.3) | 0.22 |
| IHD | 23 (14.7) | 3 (5.0) | 20 (20.6) | 0.01 |
| GERD | 70 (44.6) | 20 (33.3) | 50 (51.6) | 0.03 |
| COPD | 10 (6.4) | 2 (3.3) | 8 (8.3) | 0.32 |
AHI, apnea-hypopnea index; BMI, body mass index; COPD, chronic obstructive pulmonary disease; CI: Confidence interval; ESS, Epworth Sleepiness Scale; GERD, gastroesophageal reflux disease; IHD, ischemic heart disease; SD, standard deviation.