Table 1.
Baseline characteristics of the hypoxic and normoxic groups
| Variable | Hypoxic group (n = 18) | Normoxic group (n = 16) | P values |
|---|---|---|---|
| Gender (m, f) | m 5 (28%)/f 13 (72%) | m 2 (12.5%)/f 14 (87.5%) | .25** |
| Age (years) | 80.9 (7.9) | 83.4 (5.5) | .14 |
| Height (cm) | 163.7 (8.3) | 163.2 (8.5) | .43 |
| Weight (kg) | 72.0 (9.3) | 66.8 (12.3) | .09 |
| BMI (kg/m2) | 27.0 (3.9) | 25.0 (3.6) | .07 |
| MMSE score | 24.9 (3.8) | 24.5 (3.9) | .36 |
| Therapy days (n) | 18.3 (2.4) | 17.5 (2.6) | .16* |
| Systolic blood pressure (mm Hg) | 137.2 (18.9) | 134.6 (15.9) | .38 |
| Diastolic blood pressure (mm Hg) | 77.5 (6.9) | 77.9 (8.7) | .42* |
| Oxygen saturation (%) | 94.2 (6.2) | 93.7 (7.5) | .42 |
| Oxygen saturation, HT (%) | 81.4 (2.8) | 83.9 (5.5) | .27* |
| Total cholesterol (mg/dL) | 231.2 (46.2) | 215.9 (58.1) | .09* |
| Regular medication, n (%) | |||
| Anticoagulants | 9 (50) | 10 (62.5) | .35** |
| β blockers | 7 (38.9) | 8 (50) | .38** |
| ACE inhibitors | 7 (38.9) | 6 (37.5) | .61** |
| AT II inhibitors | 6 (33.3) | 3 (18.8) | .29** |
| Calcium channel blockers | 5 (27.8) | 1 (6.3) | .12** |
| Statins | 1 (5.6) | 4 (25) | .13** |
| Diuretics | 8 (44.4) | 9 (56.3) | .37** |
| Nitrates | 1 (5.6) | 1 (6.3) | .73** |
Abbreviations: BMI, body mass index; MMSE, Mini–Mental State Examination; HT, hypoxic test 1; SD, standard deviation.
NOTE. Data represent means (SD) or frequencies (%). P values for differences between groups are based on the use of the Welch test if values are normally distributed or on the use of the Mann–Whitney U test (*) if values are not normally distributed. **P values calculated by the Exact Fisher–Yates Test.