Table 1.
Effect of PS-omega-3 on individual task outcome measures and cognitive factor scores from the CDR battery. Mean baseline and study termination scores are presented (with standard errors of the mean)
| CDR measure | Baseline | Six weeks | P |
|---|---|---|---|
| Individual task | |||
| Immediate word recall (% accuracy) | 36.67 ± 4.36 | 36.67 ± 6.42 | 0.854 |
| Simple reaction time (ms) | 338.80 ± 23.82 | 346.20 ± 8.16 | 0.889 |
| Digit vigilance targets detected (%) | 98.33 ± 0.91 | 97.22 ± 1.17 | 0.414 |
| Digit vigilance false alarms (#) | 2.00 ± 0.57 | 1.50 ± 0.42 | 0.518 |
| Digit vigilance reaction time (ms) | 467.40 ± 17.56 | 491.50 ± 18.65 | 0.036 |
| Choice reaction time accuracy (%) | 97.00 ± 1.13 | 96.75 ± 1.19 | 0.783 |
| Choice reaction time (ms) | 554.30 ± 18.68 | 544.60 ± 16.07 | 0.484 |
| Spatial working memory sensitivity index (#) | 0.97 ± 0.01 | 0.96 ± 0.02 | 0.786 |
| Spatial working memory reaction time (ms) | 1199.00 ± 107.00 | 1084.00 ± 61.08 | 0.161 |
| Numeric working memory sensitivity index (#) | 0.96 ± 0.02 | 0.94 ± 0.04 | 0.588 |
| Numeric working memory reaction time (ms) | 932.20 ± 56.28 | 979.20 ± 74.50 | 0.401 |
| Delayed word recall (% accuracy) | 20.00 ± 4.36 | 28.33 ± 7.43 | 0.041 |
| Decay immediate to delayed word recall (% accuracy) | 16.67 ± 3.09 | 8.335 ± 3.51 | 0.027 |
| Word recognition sensitivity index (#) | 0.66 ± 0.06 | 0.76 ± 0.05 | 0.141 |
| Word recognition reaction time (ms) | 1063.00 ± 79.51 | 1108.00 ± 77.45 | 0.484 |
| Picture recognition sensitivity index (#) | 0.76 ± 0.05 | 0.74 ± 0.06 | 0.484 |
| Picture recognition reaction time (ms) | 1203.00 ± 79.83 | 1254.00 ± 55.94 | 0.674 |
| Cognitive factor | |||
| Power of attention | 1360.5 ± 51.9 | 1382.3 ± 36.2 | 0.484 |
| Continuity attention | 90.8 ± 1.0 | 90.6 ± 0.8 | 0.916 |
| Quality of working memory | 1.93 ± 0.03 | 1.90 ± 0.04 | 0.612 |
| Quality of episodic secondary memory | 189.8 ± 13.1 | 205.6 ± 21.5 | 0.208 |
| Speed of memory | 4397.3 ± 270.0 | 4425.1 ± 198.6 | 0.889 |
Note: The sensitivity index is calculated from formulae presented by Frey and Colliver21 and combines the accuracy scores to the original and the novel distracter information.