Table 1

Baseline characteristics from patients

20192020
Total620567
Age (years)53.4±13.653.4±13.3
Gender
 Female206 (33.2%)185 (32.6%)
 Male414 (66.8%)380 (67.0%)
Ethnicity
 White476 (76.8%)383 (67.5%)
 Asian18 (2.9%)12 (2.1%)
 Black10 (1.6%)10 (1.8%)
 Other7 (1.2%)5 (0.9%)
 Unknown109 (17.6%)157 (27.7%)
BMI (kg/m2)34.9 (30.6, 41.0)34.8 (29.5, 40.4)
ESS11.2±5.511.8±5.2
ODI (/hour)23.0 (14.1, 43.0)21.5 (13.0, 41.8)
AHI (/hour)25.5 (15.0, 40.4)25.7 (14.5, 46.8)
  • Data are expressed as mean±SD, median (first quartile, third quartile) or number (percentage), as appropriate.

  • AHI, Apnoea–Hypopnoea Index; BMI, body mass index; ESS, Epworth Sleepiness score; ODI, Oxygen Desaturation Index ≥4%.