Table 1. Clinical characteristics of the participants.
| Test cohort | Validation cohort | |||||
| Clinical characteristics | Total(n = 2,032) | Male(n = 1,674) | Female(n = 358)* | Total(n = 784) | Male(n = 652) | Female(n = 132)* |
| Sex (%) | _ | 82.38 | 17.62 | _ | 83.2 | 16.8 |
| Age (years) | 43.0 (27.0–64.0) | 41.0 (27.0–63.0) | 53.0 (27.0–71.0) | 41.0 (27.0–64.8) | 40.0 (28.0–63.0) | 52.0 (24.7–68.1) |
| High(m) | 1.70 (1.57–1.81) | 1.72 (1.63–1.82) | 1.60 (1.50–1.69) | 1.71 (1.58–1.80) | 1.72 (1.64–1.81) | 1.60 (1.51–1.69) |
| Weight(kg) | 77.0 (57.0–100.0) | 80.0 (63.0–100.0) | 64.0 (50.0–85.0) | 77.9 (57.2–100.0) | 80.0 (64.0–100.0) | 64.0 (47.7–89.4) |
| BMI (kg/m2) | 26.4 (21.3–33.0) | 26.6 (22.0–33.2) | 25.35±3.75 | 26.6 (21.1–32.9) | 26.8 (22.0–32.8) | 25.1 (18.7–33.1) |
| NC (cm) | 40.0 (34.0–44.0) | 40.0 (36.0–45.0) | 36.0 (31.0–41.0) | 39.0 (33.0–45.0) | 40.0 (36.0–45.0) | 35.0 (30.3–41.0)† |
| WC (cm) | 95.0 (79.0–112.0) | 96.0 (82.0–112.0) | 88.95±10.11 | 95.0 (79.0–114.0) | 96.3 (82.7–114.0) | 88.5 (70.0–114.0) |
| HC (cm) | 100.0 (91.0–112.0) | 100.5 (92.0–112.0) | 98.0 (88.0–112.0) | 100.0 (90.0–113.0) | 100.0 (90.0–113.0) | 97.0 (84.3–112.4) |
| W/H ratio | 0.95 (0.84–1.04) | 0.95 (0.87–1.04) | 0.90±0.06 | 0.95 (0.85–1.04)† | 0.96 (0.87–1.05)† | 0.91 (0.80–1.03) |
| ESS | 9 (0–19) | 10 (1–20) | 7 (0–18) | 9 (0–19) | 10 (0–19) | 7 (0–18) |
| SaO2 (%) | 80.0 (55.0–95.0) | 79.0 (54.0–94.0) | 85.0 (60.0–96.0) | 80.0 (51.0–98.0) | 78.0 (50.0–98.0) | 86.0 (53.7–98.0) |
BMI = body mass index; NC = neck circumference; WC = waist circumference; HC = hip circumference; W/H ratio = the ratio of waist circumference to that of the hips; ESS = Epworth Sleepiness Scale; AHI = apnea-hypopnea index.
*
Male versus female subjects in the same cohort, P<0.01.
†
Test cohort versus validation cohort, P<0.05.
Values are presented as median (95% confidence interval) unless stated otherwise.