Table 1.
Group demographics and sleep-disordered breathing status. Anthropometric, demographic, medical history, “eye problems” questionnaire, and polysomnography data presented as mean ± SD (A), frequency (B), or median (IQR) (C) and where appropriate, plus range, or percentage of total
| A) | N | Mean ± SD | Range |
|---|---|---|---|
| Age (years) | 396 | 56.1 ± 11.0 | 22–79 |
| BMI (kg/m2) | 393 | 32.2 ± 7.4 | 17.1–71.4 |
| Systolic BP (mmHg) | 389 | 129 ± 16 | 90–176 |
| Diastolic BP (mmHg) | 389 | 78 ± 9.0 | 51–110 |
| B) | N | Frequency | Percentage |
| Gender (male) | 396 | 226 | 57.1 |
| Ethnicity (Caucasian) | 396 | 240 | 60.6 |
| Hypertension History | 396 | 177 | 44.7 |
| Hypercholesterolemia History | 396 | 176 | 44.4 |
| Diabetic History | 396 | 29 | 7.3 |
| Smoking history (including 20 current smokers) | 396 | 177 | 44.7 |
| Reported Eye Problems | 259 | 70 | 27.0 |
| C) | N | Median (IQ range) | Range |
| AHI (events/h) | 385 | 12.6 (4.4–27.4) | 0.0–103.9 |
| RDI (events/h) | 385 | 24.8 (14.2–42.4) | 1.1–104.2 |
| AI (events/h) | 385 | 27.9 (18.9–41.1) | 5.9–100.5 |
| ODI 3% (events/h) | 385 | 4.1 (1.1–10.0) | 0.0–73.0 |
| SpO2 < 90% (% TST) | 385 | 0.6 (0.0–3.2) | 0.0–99.6 |
BMI body mass index, BP blood pressure, AHI apnea–hypopnea index, RDI respiratory disturbance index, AI arousal index, ODI 3% oxygen desaturation (3%) index, SpO2 < 90% percent of sleep time with oxygen saturation < 90