Table 1.
Characteristics of study patients
| Characteristics | Mean ± SD or n (%) |
| Mean age in years | 44.3 ± 15.2 |
| Age range | |
| 18–44 | 486 (52.5) |
| 45–64 | 330 (35.6) |
| 65+ | 110 (11.9) |
| Mean body mass index (kg/m2) | 24.3 ± 4.6 |
| Epworth Sleepiness Scale rating | 6.9 ± 3.9 |
| Sex | |
| Male | 440 (47.5) |
| Female | 486 (52.5) |
|
Presence of chronic medical condition |
556 (60.0) |
| Hypertension | 326 (35.3) |
| Type 2 diabetes mellitus | 100 (10.8) |
| Obesity | 104 (11.2) |
| Peptic ulcer | 112 (12.1) |
| Asthma | 52 (5.6) |
| Insomnia | 54 (5.8) |
| Stroke | 28 (3.0) |
| Heart failure | 38 (4.1) |
| COPD | 32 (3.5) |
| Rhinitis | 18 (1.7) |
| Others | 128 (13.8) |
| Previous OSA diagnosis | 0 |
| Use of sedatives | 110 (11.9) |
| Tobacco smoking | 132 (14.2) |
| Alcohol consumption | 262 (28.3) |
|
First-degree relative with snoring or excessive sleepiness |
396 (42.8) |
SD = standard deviation; COPD = chronic obstructive pulmonary disease; OSA = obstructive sleep apnoea