Document Classification

Section Type: RESULTS

Text: (1) Epworth sleepiness scale (ESS) score, apnea-hypopnea index (AHI) and arousal index were significantly lower (8. 25 5. 41 vs. 4. 08 3. 43, 39. 95 7. 32 vs. 4. 71 1. 80 and 39. 69 4. 40 vs. 15. 20 2. 05, P < 0. 01) while not rapid eye movement (NREM) III and rapid eye movement stage of sleep time and lowest pulse oxygen saturation (LSaO2) were significantly higher in NPPV group than in control group [(4. 53 2. 10) % vs. (16. 78 2. 59) %, (8. 37 1. 380) % vs. (15. 25 1. 41) %, (77. 15 6. 72) % vs. (93. 35 2. 03) %, P < 0. 01] after 3 months therapy.