Table 1 Demographic, anthropometric, and polysomnographic characteristics of the study population
Derivation cohort (n = 419) | Validation cohort (n = 107) | p-value | |
|---|---|---|---|
Demography/Anthropometry | |||
Age (year) | 50.0 (40.0,59.0) | 49.0 (38.0,56.0) | 0.212 |
Gender (male/female) | 307/112 | 78/29 | 0.938 |
NC (cm) | 42.0 (40.0,45.0) | 42.0 (40.0,44.0) | 0.110 |
WC (cm) | 106.0 (98.0,113.0) | 103.0 (95.0,109.0) | 0.003 |
BMI (kg/m2) | 29.4 (27.1,32.0) | 28.9 (26.9,30.8) | 0.131 |
Polysomnography | |||
ESS (score) | 12.0 (6.0,18.0) | 8.0 (4.0,14.0) | 0.000 |
AHI (/hr) | 57.1 (35.4,71.6) | 54.1 (33.2,71.5) | 0.659 |
ODI(/hr) | 51.1 (30.2,69.9) | 46.8 (25,7,66.9) | 0.209 |
ArI (/hr) | 29.1 (15.3,45.3) | 25.4 (15.9,44.9) | 0.926 |
AI (/hr) | 24.6 (7.3,50.0) | 26.4 (9.2,49.3) | 0.632 |
HI (/hr) | 21.2 (11.6,34.5) | 20.0 (9.9,31.6) | 0.137 |
LAT (s) | 54.0 (38.0,68.0) | 53.0 (36.0,71.0) | 0.964 |
MAT (s) | 23.0 (18.8,27.7) | 23.0 (18.2,31.0) | 0.531 |
LHT (s) | 56.0 (47,69.5) | 62.5 (49.0,78.5) | 0.012 |
MHT (s) | 24.4 (20.0,29.0) | 24.7 (21.1,30.2) | 0.477 |
REM (%) | 10.5 (6.0,15.6) | 12.1 (7.4,15.8) | 0.175 |
N1 (%) | 28.0 (18.8,42.2) | 32.1 (22.1,53.0) | 0.021 |
N2 (%) | 52.5 (41.5,61.5) | 48.0 (34.5,61.8) | 0.101 |
N3 (%) | 4.5 (0.4,10.1) | 0.5 (0.0,6.4) | 0.000 |
minSpO2 (%) | 73.0 (61.0,80.0) | 74.0 (62.0,82.0) | 0.248 |
meanSpO2 (%) | 94.0 (91.0,95.0) | 94.0 (91.0,95.0) | 0.349 |
T90 (%) | 8.7 (1.5,27.2) | 7.9 (1.7,28.1) | 0.784 |