Group differences by disease category, ethnicity and sex†
| Variable | Disease category | Ethnicity | Sex | |||
|---|---|---|---|---|---|---|
| OSA(n = 201) | Normal(n = 38) | Asian(n = 164) | White(n = 75) | Male(n = 199) | Female(n = 40) | |
| OSA, obstructive sleep apnoea; BMI, body mass index; MS, Mallampati oropharyngeal score; TMA, thyromental angle; TMD, thyromental distance; ESS, Epworth Sleepiness Scale; AHI, apnoea-hypopnoea index. | ||||||
| Values are mean (SD). | ||||||
| *p value <0.001. | ||||||
| †Following Bonferroni corrections for multiple comparisons, p values ⩽0.006 were considered significant. | ||||||
| Age (years) | 49 (12) | 44 (13) | 49 (11) | 47 (14) | 49 (12) | 48 (12) |
| M/F | 169/32 | 30/8 | 140/24 | 59/16 | – | – |
| BMI (kg/m2) | 29 (5) | 27 (5) | 29 (4) | 30 (7) | 29 (5) | 30 (7) |
| Neck (cm) | 40 (4) | 39 (4) | 40 (3) | 41 (4) | 41 (3) | 36 (4)* |
| MS (1–4) | 3.7 (0.5) | 3.4 (0.8)* | 3.9 (0.4) | 3.2 (0.8)* | 3.7 (0.6) | 3.5 (0.6) |
| TMA (degrees) | 161 (18) | 149 (19)* | 161 (18) | 156 (19) | 160 (18) | 155 (22) |
| TMD (cm) | 5 (1) | 5 (1) | 5 (1) | 6 (1)* | 5 (1) | 5 (1) |
| ESS | 11 (5) | 11 (5) | 11 (5) | 11 (5) | 11 (5) | 11 (6) |
| AHI (/h) | 32 (22) | 3 (2)* | 30 (24) | 22 (19) | 30 (23) | 14 (13)* |