Table 3.
Comparison of neuropsychological tests scores between OSA patients and healthy controls
| OSA group | Control group | P | |
|---|---|---|---|
| Attention and executive functioning composite score, mean (SD) | −0.08 (0.47) | 0.08 (0.41) | 0.071 |
| Digit span, forward, mean (SD) | 8.4 (2.2) | 9.6 (1.9) | 0.017 |
| Digit span, backward, mean (SD) | 7.4 (1.9) | 8.1 (2.0) | 0.128 |
| Corsi block, forward, mean (SD) | 8.4 (2.0) | 10.7 (9.9) | 0.071 |
| Corsi block, backward, mean (SD) | 8.3 (1.6) | 8.6 (1.4) | 0.336 |
| Trail-making test A, mean (SD) | 40.7 (12.7) | 32.7 (10.9) | 0.007 |
| Trail-making test B, mean (SD) | 102.2 (45.3) | 83.1 (31.9) | 0.045 |
| Stroop color test, mean (SD) | 104.4 (13.3) | 104.2 (11.6) | 0.793 |
| Information processing composite score, mean (SD) | −0.29 (0.73) | 0.27 (1.15) | 0.008 |
| Digit symbol test, mean (SD) | 56.7 (10.4) | 64.7 (16.4) | 0.008 |
| Verbal memory composite score, mean (SD) | −0.25 (0.75) | 0.23 (0.86) | 0.003 |
| Korean California Verbal Test | |||
| Total, mean (SD) | 49.6 (11.2) | 58.1 (9.2) | <0.001 |
| Short delay free recall, mean (SD) | 11.1 (2.7) | 12.7 (2.8) | 0.006 |
| Long delay free recall, mean (SD) | 11.7 (2.6) | 13.2 (2.4) | 0.001 |
| Recognition, mean (SD) | 14.6 (1.6) | 15.0 (1.3) | 0.374 |
| Visual memory composite score, mean (SD) | −0.17 (0.73) | 0.15 (0.84) | 0.039 |
| Rey Complex Figure Test | |||
| Copy, mean (SD) | 34.6 (2.2) | 35.2 (1.1) | 0.415 |
| Immediate recall, mean (SD) | 23.1 (6.5) | 24.4 (7.2) | 0.400 |
| Delayed recall, mean (SD) | 22.9 (6.1) | 25.0 (6.3) | 0.161 |
| Recognition, mean (SD) | 20.1 (1.9) | 20.9 (2.1) | 0.071 |
| Verbal fluency composite score, mean (SD) | −0.09 (0.78) | 0.08 (0.60) | 0.216 |
| Controlled Oral Word Association Test | |||
| Phonetic word fluency, mean (SD) | 31.6 (13.9) | 36.6 (13.2) | 0.076 |
| Semantic word fluency, mean (SD) | 35.3 (8.8) | 34.2 (6.9) | 0.888 |
OSA, obstructive sleep apnea; SD, standard deviation. Bold values denote statistical significance at the p < 0.05 level.