Table 4.
Mean Neuropsychological Test Scores Using Raw Data
| Neuropsychological Test | Placebo (n = 14) |
CPAP (n = 17) |
Oxygen (n = 15) |
P Valuea |
||||
|---|---|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | Pre | Post | Time | Treatmentb | |
| Digit Symbol, no. correct | 67.6 | 68.7 | 65.8 | 73.8 | 73.9 | 77.9 | 0.014 | 0.256 |
| Symbol Search, no. correct | 32.1 | 37.7 | 31.8 | 33.8 | 33.3 | 35.9 | 0.036 | 0.614 |
| Digit Vigilance, timeb | 326.4 | 303.1 | 350.9 | 312.3 | 314.1 | 313.4 | < 0.001 | 0.020 |
| Trail Making A, timeb | 25.5 | 21.7 | 32.4 | 26.5 | 29.1 | 24.7 | < 0.001 | 0.494 |
| Stroop Color, no. correct | 73.7 | 77.9 | 67.7 | 72.3 | 66.7 | 76.7 | 0.007 | 0.532 |
| Letter/Number Sequencing | 11.7 | 12.9 | 11.0 | 11.9 | 11.1 | 11.7 | 0.005 | 0.827 |
| Digit Span Total | 21.2 | 22.5 | 18.6 | 26.4 | 19.3 | 21.3 | 0.091 | 0.378 |
| Digit Vigilance, no. errorsb | 14.1 | 10.6 | 5.6 | 7.2 | 8.9 | 7.3 | 0.196 | 0.080 |
| Trail Making B, timeb | 70.3 | 59.6 | 70.8 | 63.4 | 66.8 | 60.7 | 0.010 | 0.823 |
| Stroop Color-Word ratio | 37.9 | 41.9 | 37.7 | 37.3 | 40.1 | 44.2 | 0.007 | 0.061 |
| Brief Visuospatial Memory Test-Rev—TR | 26.1 | 25.7 | 26.4 | 29.7 | 27.0 | 28.2 | 0.073 | 0.143 |
| Hopkins Verbal Learning Test-Rev—TR | 26.3 | 25.5 | 24.7 | 24.2 | 27.9 | 28.6 | 0.679 | 0.486 |
| Brief Visuospatial Memory Test-Rev—DR | 10.5 | 9.4 | 10.8 | 10.7 | 10.7 | 10.5 | 0.022 | 0.138 |
| Hopkins Verbal Learning Test-Rev—DR | 9.0 | 8.3 | 8.9 | 8.8 | 9.8 | 9.8 | 0.347 | 0.641 |
| Word Fluency Total | 42.3 | 45.5 | 38.4 | 40.9 | 37.0 | 44.3 | < 0.001 | 0.149 |
a
p Values are listed for effects on the time × treatment interaction.
b
Lower scores indicate better performances. TR refers to total recall; DR refers to delayed recall.