Values of closing pressure measured at the velopharyngeal and oropharyngeal level depending on the main site of twitch-induced upper airway collapse
| k1/k2 | ||
| Velopharynx | Oropharynx | |
| Exclusive velopharyngeal closure (n=12) | −8.5±2.8 | |
| Exclusive oropharyngeal closure (n=9) | −7.5±2.8 | |
| Primary oropharyngeal closure (n=8) | −8.9±2.4 | −7.3±2.6 |