Anthropometric data, nasal resistance values and polysomnographic parameters at baseline and after surgery in the responders and nonresponders
| Responders | Nonresponders | |||
| Baseline | After surgery | Baseline | After surgery | |
| Subjects n | 4 | 23 | ||
| Male sex % | 75.0 | 60.9 | ||
| Age yrs | 36.3±5.9 | 39.4±7.8 | ||
| Body mass index kg·m−2 | 27.8±4.3 | 28.0±4.3 | 30.9±2.9# | 31.5±3.3 |
| Apnoea/hypopnoea index events·h−1 | 31.0±21.3 | 8.1±4.0* | 31.6±16.8 | 35.6±16.5* |
| Nasal resistance cmH2O·L−1·S | ||||
| Seated | 4.3±0.7 | 1.8±0.3* | 4.2±0.9 | 2.1±0.6* |
| Supine | 4.8±0.7 | 2.3±0.2* | 4.5±1.0 | 2.4±0.6* |
| Average oxygen saturation % | 95.1±1.0 | 96.1±0.9 | 94.2±1.0 | 94.2±1.2 |
| Duration of apnoea/hypopnoea s | 22.3±2.5 | 23.1±3.6 | 23.4±3.5 | 23.6±3.2 |
| Epworth Sleepiness Scale score | 16.0±3.6 | 11.8±5.0* | 13.0±2.6# | 11.7±3.2 |
| Sleep time in supine posture min | 157.3±69.9 | 155.8±76.2 | 150.1±100.1 | 151.9±97.2 |
| Nasal breathing epochs % TSE | 53.1±6.8 | 89.6±4.1* | 74.6±11.3*** | 83.0±5.8* |
| Oral breathing epochs % TSE | 8.5±5.1 | 1.1±1.4* | 2.6±2.9*** | 1.3±1.3* |
| Oronasal breathing epochs % TSE | 38.4±3.7 | 9.3±2.7* | 22.8±8.7*** | 15.7±5.2* |
Data are presented as mean±sd, unless otherwise stated. TSE: total sleep epochs. *: p<0.05 versus baseline; #: p<0.05 versus baseline of responders; ***: p<0.001 versus baseline of responders.