Vigilance and attentional assessment
| First evaluation (before treatment) | Second evaluation (after treatment) | |||||
| Patients | Controls | p-values | Patients | Controls | p-values | |
| Subjects n | 20 | 20 | 10 | 10 | ||
| OSleR test: maintenance of wakefulness | ||||||
| Sleep latency s | 2373.0±83.8 | 2400.0±0.0 | NS | 2358.0±132.8 | 2400.0±0.0 | NS |
| Error number | 20.8±35.4 | 1.8±0.7 | 0.009 | 10.2±15.6 | 1.0±1.6 | NS |
| CPT: selective and sustained attention | ||||||
| Reaction time ms | 380.09±49.11 | 367.35±57.39 | NS | 377.52±42.95 | 354.11±47.38 | NS |
| Number of omission | 2.2±2.9 | 1.7±1.7 | NS | 1.4±1.2 | 0.6±0.7 | NS |
| Number of commission | 13.2±4.9 | 12.3±4.6 | NS | 12.3±4.6 | 12.0±4.7 | NS |
| Attentiveness | 1.0±0.9 | 1.2±1.1 | NS | 0.7±0.3 | 1.0±0.9 | NS |
| Driving simulator: divided attention | ||||||
| Duration s | 794.1±439.4 | 1186.1±62.2 | <0.001 | 1080.6±337.8# | 1200.0±0.0 | NS |
| Reaction time s | 3.98±2.47 | 1.95±0.87 | <0.001 | 2.72±0.78# | 1.82±0.50 | <0.01 |
| Off-road events | 89.5±116.7 | 10.00±12.5 | <0.001 | 27.6±52.5# | 14.3±17.7 | NS |
Data are expressed as mean±sd, unless otherwise stated. OSleR: Oxford sleep resistance; CPT: continuous performance test; NS: non-significant (p>0.05). #: significant intra-group difference between first and second evaluation. The baseline performances of the 10 controls and 10 obstructive sleep apnoea syndrome patients did not differ from those of the whole groups (n = 20), and from the 10 subjects who did not repeat the evaluation.