Correlations between study variables and the Apnea–Hypopnea Index in the overall study population
| Variable | Spearman’s coefficient ρ | p value |
|---|---|---|
| Age | 0.554 | < 0.001 |
| Body mass index | 0.297 | 0.06 |
| STOP questionnaire score | 0.501 | 0.001 |
| Epworth Sleepiness Scale score | 0.146 | 0.4 |
| NOSE scale score | 0.323 | 0.04 |
NOSE = Nasal Obstruction Symptom Evaluation; STOP = snoring, tiredness, observed apnea, high blood pressure.