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Table 1 Demographic, anthropometric, polysomnographic and titration data in CPAP and BiPAP groups

From: Useful variables during wake and sleep for prediction of positive airway pressure in obstructive sleep apnea titration

PAP group CPAP n = 51 BiPAP n = 27 p-value
Variables
Age (year) 53.4 ± 13.7 59.6 ± 13.7 0.057
Male number (%) 30(59.6%) 14(53.6%) 0.602
DM(%) 24(47.0%) 9(33.3%) 0.382
HTN(%) 15(29.4%) 5(18.5%) 0.344
CAD(%) 16(31.4%) 9(33.3%) 0.950
Neck circumference (cm) 41.2 ± 3.7 41.9 ± 4.7 0.427
BMI (kg/m2 ± SD) 31.3 ± 6.0 33.0 ± 4.8 0.216
AHI category (%) 0.543
 5–14.9 2(3.9%) 2(7.4%)
 15–29.9 11(21.6%) 3(11.1%)
  ≥ 30 37(74.5%) 21(81.5%)
ODI 35.6 ± 23.0 45.8 ± 26.0 0.193
T < 90%a 11.0 ± 18.1 13.0 ± 17.4 0.964
REM Cycle Number 1.6 ± 2.1 0.7 ± 1.0 0.249
Supine position 10(19.6%) 8(28.6%) 0.340
  1. Continues variable are indicated by Mean ± SD and categorical variables are indicated
  2. aTime of sleep with SaO2 < 90%