Table 4. Principal component analysis for the neurobehavioral outcome measures.
| Neurobehavioral measure | PC1 | PC2 | PC3 | PC4 | PC5 | PC6 |
|---|---|---|---|---|---|---|
| Selective Att Latency | 0.5578 | 0.0109 | −0.0066 | −0.0449 | 0.0045 | −0.0113 |
| Selective Att ISI | 0.5506 | 0.0594 | −0.0696 | 0.0096 | −0.0108 | −0.0113 |
| Selective attention trials | 0.4949 | −0.0396 | 0.1075 | 0.0210 | 0.0356 | 0.0429 |
| Trailmaking A | −0.0400 | 0.5322 | 0.0432 | 0.0159 | 0.0286 | 0.0479 |
| Trailmaking B | 0.0484 | 0.4748 | −0.0719 | 0.0480 | −0.1941 | 0.0022 |
| Serial digit learn | 0.0548 | 0.0353 | 0.5733 | −0.0609 | −0.0915 | −0.0462 |
| Symbol-Digit latency | −0.0434 | −0.0989 | 0.5650 | 0.0681 | 0.0707 | −0.0426 |
| Block design | 0.1384 | −0.2276 | −0.0037 | 0.6471 | −0.0099 | 0.0665 |
| Santa Ana dominate | −0.1270 | 0.2444 | −0.0358 | 0.5178 | −0.0899 | −0.0197 |
| Santa Ana NonDominate | −0.0604 | 0.2107 | 0.0053 | 0.4349 | 0.2299 | −0.2880 |
| Finger tap alternating | 0.0943 | −0.0352 | 0.1245 | −0.0939 | 0.5666 | −0.1454 |
| Finger tapping | 0.0941 | −0.0124 | −0.2274 | 0.0874 | 0.5381 | 0.0454 |
| Reaction time | −0.2099 | −0.0570 | 0.0758 | −0.0079 | 0.4235 | 0.1627 |
| Match sample score | −0.1070 | 0.0548 | 0.0113 | −0.0882 | 0.1265 | 0.5946 |
| Similarities | 0.0124 | −0.2932 | 0.2244 | 0.2837 | −0.1089 | 0.4461 |
| Match-sample latency | −0.0649 | −0.1005 | 0.1816 | 0.0257 | 0.0474 | −0.4534 |
| Continuous performance dprime | 0.0838 | 0.2772 | −0.0069 | 0.0403 | 0.2160 | 0.2636 |
| Benton visual retention | 0.0899 | 0.1652 | 0.1495 | 0.0184 | −0.0960 | 0.1591 |
| Digit span | 0.0165 | 0.3337 | 0.3853 | −0.0565 | 0.0993 | 0.0360 |
Bolded items indicate principal component loadings