Table 2.

Percentage of Subjects With Impaired Neuropsychological Functioning Before Treatment

Neuropsychological Test	%a
Digit Symbol, no. correct	17.8
Symbol Search, no. correct	6.5
Digit Vigilance, time	2.2
Trail Making A, time	15.2
Stroop Color, no. correct	42.2
Letter/Number Sequencing, no. correct	6.5
Digit Span Total	8.7
Digit Vigilance, no. of errors	26.1
Trail B, time	15.2
Stroop Color-Word, ratio	6.7
Brief Visuospatial Memory Test-Rev—TR	8.7
Hopkins Verbal Learning Test-Rev—TR	26.1
Brief Visuospatial Memory Test-Rev—DR	2.2
Hopkins Verbal Learning Test-Rev—DR	28.3
Word Fluency, Total	30.4

^aPercentage of subjects with < 40 T-score, implying impaired neuropsychological functioning in the tests before Treatment (ie, therapeutic-continuous positive airway pressure [CPAP], oxygen supplementation, or placebo-CPAP). TR refers to total recall; DR refers to delayed recall.