Table 3. Relationship of background variables and neuropsychological test scores to race/ethnicity in HIV negative participants.
| White | African American | Hispanic | Other race | |||||
|---|---|---|---|---|---|---|---|---|
| N | 48 | 320 | 123 | 20 | ||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| Age a | 36.0 | 9.2 | 38.8 | 10.2 | 36.4 | 9.6 | 34.0 | 6.8 |
| Years education b | 14.2 | 3.4 | 12.3*** | 2.8 | 11.5*** | 2.9 | 12.4 | 3.5 |
| WRAT reading c | 49.0 | 5.5 | 42.7*** | 7.4 | 43.8*** | 8.2 | 47.7 | 6.9 |
| Trails A time d | 3.4 | 0.3 | 3.6*** | 0.4 | 3.5* | 0.4 | 3.4 | 0.4 |
| Trails A errors | 0.1 | 0.4 | 0.2 | 0.5 | 0.2 | 0.4 | 0.1 | 0.3 |
| Trails B time e | 4.1 | 0.4 | 4.4*** | 0.4 | 4.3** | 0.4 | 4.2 | 0.4 |
| Trails B errors f | 0.2 | 0.5 | 1.0*** | 1.5 | 0.7** | 1.2 | 0.5 | 0.7 |
| Symbol Digit total g | 52.2 | 13.4 | 43.4*** | 10.8 | 46.2** | 11.4 | 48.9 | 7.9 |
| Incidental learning h | 6.2 | 2.5 | 4.4*** | 2.7 | 4.4** | 2.8 | 4.9 | 2.6 |
Note: Trails A and B times were log transformed for this analysis. Significance is marked (* p < .05; ** p < .01; *** p < .001) when group mean differed from that of Whites using a Tukey's HSD post-hoc test with the exception of Trails A and B errors where follow-up Mann-Whitney U tests were conducted.