| Apnoeic | Normal | Difference % | p-value# | |
| All subjects | ||||
| Subjects n | 54¶ | 55 | ||
| Mandibular mm | ||||
| Body length | 86.79±4.55 | 88.01±5.95 | -1.4 | 0.25 |
| Width | 90.21±6.12 | 88.12±7.26 | 2.3 | 0.12 |
| Depth | 71.75±5.85 | 73.08±6.13 | -1.9 | 0.26 |
| Males | ||||
| Subjects n | 26¶ | 27 | ||
| Mandibular mm | ||||
| Body length | 88.42±4.78 | 91.29±4.58 | -3.2 | 0.04 |
| Width | 94.83±3.70 | 92.50±6.99 | 5.4 | 0.17 |
| Depth | 70.35±5.43 | 73.98±4.89 | -5.2 | 0.02 |
| Females | ||||
| Subjects n | 28 | 28 | ||
| Mandibular mm | ||||
| Body length | 85.52±4.00 | 84.84±5.42 | 0.8 | 0.60 |
| Width | 84.59±5.14 | 82.14±4.54 | 2.9 | 0.04 |
| Depth | 72.85±6.02 | 72.21±7.12 | 0.9 | 0.72 |
Data are presented as mean±sd, unless otherwise stated. Significant differences (p<0.05) are presented in bold. Body length: average left and right mandibular body length. Difference: apnoeic - normal. #: t-test. ¶: mandibular measurements were not obtained in one subject due to magnetic resonance imaging artefacts.