Table 3.
Comparison of demographic, clinical characteristics and sleep parameters of Hungarian and Romanian patients with obstructive sleep apnea (OSA).
| Hungary (n = 282) | Romania (n = 306) | p | |
|---|---|---|---|
| Age | 59 /48–67/ | 52 /44–58/ | <0.01 |
| Gender (male%) | 66.3 | 71.6 | 0.17 |
| BMI | 32.1 /17.3–37.3/ | 32.2 /29.0–35.9/ | 0.72 |
| Smoking status (ever/never) | 120/162 | 154/152 | 0.06 |
| Smoking status (current/ex/never) | 79/41/162 | 91/63/152 | 0.09 |
| Cigarette pack years | 0 /0–12/ | 0 /0–19/ | 0.02 |
| ESS | 6 /3–9/ | 10 /6–13/ | <0.01 |
| TST | 415 /380–445/ * | 421 /360–466/ | 0.26 |
| SPT | 449 /413–483/ * | 479 /443–512/ | <0.01 |
| Sleep% | 95 /89–97/ * | 90 /79–96/ | <0.01 |
| REM% | 16.4 /12.0–21.2/ * | 14.9 /11.5–20.1/ | 0.32 |
| AHI | 22.7 /12.2–42.4/ | 39.3 /23.6–63.3/ | <0.01 |
| AHIREM | 24.6 /11.8–46.2/ * | 41.1 /23.9–62.3/ | <0.01 |
| AHINREM | 16.7 /9.6–30.9/ * | 38.6 /22.5–62.2/ | <0.01 |
| ODI | 19.35 /9.4–35.8/ | 38.0 /22.0–61.3/ | <0.01 |
| TST90% | 4.2 /0.7–13.8/ | 13.0 /3.0–52.5/ | <0.01 |
| MinSatO2 | 83 /76–86/ | 81 /72–87/ | 0.08 |
| AI | 43.4 /29.6–59.4/ * | 18.3 /11.2–26.5/ | <0.01 |
AHI—apnea–hypopnea index; AHINREM—apnea–hypopnea index in NREM sleep; AHIREM—apnea–hypopnea index in REM sleep; AI—arousal index; BMI—body mass index; COPD—chronic obstructive pulmonary disease; ESS—Epworth Sleepiness Scale; MinSatO2—minimal oxygen saturation; ODI—oxygen desaturation index; REM%—% of REM sleep; Sleep%—sleep efficiency; SPT—sleep period time; TST—total sleep time; TST90%—% of sleep spent with oxygen saturation under 90%. * Polysomnography has been performed for 88 Hungarian patients.