Measures of sleepiness, and cognitive function at baseline, on continuous positive airway pressure(CPAP) and on mandibular advancement device (MAd)
| Parameter# | Baseline | CPAP | MAd |
| Epworth sleepiness scale (↓) | 10.6±4.5 | 8.2±3.9*** | 7.7±4.0*** |
| OSLER test | |||
| Sleep latency s (↑) | 2094±674 | 2300±391* | 2312±322* |
| Errors n (↓) | 12.5±17.9 | 8.7±19.8* | 4.3±7.5** |
| Trail Making Test A (↓) | 36.4±10.9 | 30.1±8.9*** | 32.5±9.6* |
| Trail Making Test B (↓) | 79.3±26.2 | 68.5±22.2*** | 73.4±33.0 |
Data are presented as mean±sd; #: the arrows in parentheses indicate the direction of improvement for each parameter. OSLER: Oxford sleep resistance. *: p<0.05 for the comparison of treatment versus baseline; **: p<0.01 for the comparison of treatment versus baseline; ***: p<0.001 for the comparison of treatment versus baseline. For each variable, p-values are adjusted for multiple comparisons using Bonferroni correction, i.e. p-values are multiplied by 3.