Table 2.
Cognition measures: composite (Tput) and component scores on baseline and intervention days.
| Baseline | Intervention | Difference | p-value a | |
|---|---|---|---|---|
|
Simple reaction time test |
||||
| Mean Tput b score (SE) | 209 (6) | 220 (6) | 11 (4) | 0.01 |
| Mean reaction time in msec (SE) | 293 (9) | 279 (9) | -15 (7) | 0.03 |
|
Complex reaction time test |
||||
| Mean Tput b score (SE) | 85 (3) | 92 (4) | 7 (2) | < 0.001 |
| Mean reaction time in msec (SE) | 629 (18) | 606 (21) | -23 (8) | 0.002 |
| Mean % correct (SE) | 97.5 (0.4) | 98.2 (0.3) | 0.7 (0.3) | 0.01 |
| Mean lapses c (SE) | 5.5 (0.9) | 4.3 (1.0) | -1.2 (0.6) | 0.05 |
| Mean impulses d (SE) | 6.1 (0.8) | 4.5 (0.9) | -1.6 (0.4) | < 0.001 |
a p-value for difference (Intervention day - Baseline day)
b Tput is a composite score comprising reaction time and accuracy. Higher Tput scores indicate better performance.
c Lapses: Subject did not respond to the stimulus.
d Impulses: Subject anticipated and acted before the prompt.