Table 1 Characteristics of study participants according to the apnea-hypopnea index
Total series (n = 25) | AHI < 15 (n = 16) | AHI ≥ 15 (n = 9) | P value | |
|---|---|---|---|---|
Age, mean (SD), years | 73.1 (7.2) | 72 (5.8) | 75.1 (8.7) | .295 |
Women, no. (%) | 13 (52) | 8 (50) | 5 (56) | 1.0 |
BMI, mean (SD), kg/m2 | 26.1 (5) | 25.8 (4.4) | 26.7 (6) | .671 |
Arterial hypertension, no. (%) | 16 (64) | 11 (69) | 5 (56) | .671 |
Diabetes mellitus, no. (%) | 3 (12) | 2 (13) | 1 (11) | 1.0 |
Sleep efficiency, mean (SD) | 69.6 (17.8) | 66.6 (18.7) | 74.9 (14.8) | .265 |
Total arousals per h, mean (SD) | 19.7 (13.3) | 12 (5.1) | 33.3 (12.4) | .0001 |
Oxygen saturation, mean (SD) | 95.1 (1.9) | 96 (1.4) | 93.5 (1.5) | .0001 |
MCA peak systolic velocity, mean (SD) | 76 (21.3) | 77.3 (21.8) | 73.6 (20.3) | .680 |
MCA end-diastolic velocity, mean (SD) | 25.5 (9.3) | 27.1 (9) | 22.6 (9.2) | .246 |
MCA mean flow velocity, mean (SD) | 43.8 (13.4) | 45.5 (13.5) | 40.7 (12.8) | .394 |
MCA pulsatility index, mean (SD) | 1.18 (0.19) | 1.11 (0.12) | 1.30 (0.23) | .012 |
Moderate-to-severe WMH, no. (%) | 10 (40) | 5 (31) | 5 (56) | .397 |