Demographic data of patients using STOP-Bang questionnaire
| Study ID (country) | Age (year) | Gender (%) male | BMI (kg/m2) | Neck circumference (cm) | STOP-Bang score | AHI (mean) | Minimum SpO2 (%) | QUADAS score |
| Petta et al Italy28 | 53±11 | 58 | 32±5 | NR | NR | 11.0±13.1 | NR | 12 |
| Westlake et al Czech Republic29 | 64±9 | 59 | 31±6 | 42±4 | NR | 13.6±14.7 | NR | 13 |
| Abumuamar et al Canada30 | 63±13 | 64 | 29±6 | NR | 4±1 | 20.0±17.0 | NR | 13 |
| Kee et al Australia31 | 59±12 | 63 | 33±6 | 41±4 | NR | REI: 15.0±14.0 | NR | 14 |
| Reuter et al Germany32 | 58±15 | 58 | 30±6 | 41±4 | NR | 15.0±15.0 | 81±9 | 11 |
| Teng et al China33 | 49±11 | 63 | 28±4 | 37±5 | 3.7±2 | 22.1±9.5 | NR | 14 |
| Zeng et al China34 | 63±13 | 67 | 25±3 | 38±3 | NR | NR | 82±8 | 11 |
| Chen et al China35 | 54±13 | 80 | 27±4 | 39±4 | 4.1±1 | 25.5±24.9 | 77±13 | 12 |
| Felfeli et al Canada36 | 70±12 | 41 | 28±5 | NR | NR | 31.3±20.8 | 83±7 | 14 |
Data are presented as mean±SD, where appropriate.
AHI, Apnoea–Hypopnea index; Bang, BMI, age, neck circumference and gender; BMI, body mass index; NR, not reported; REI, Respiratory Event Index; SPO2, haemoglobin oxygen saturation; STOP, snoring, tiredness, observed apnoea and high blood pressure.