Table 2.
Cognitive Performance for the Study Sample Overall and According to Race.
| Overall (N=239) | White (n=90) | Black (n=99) | Hispanic/Other1 (n=50) | F-value3 | Chi-Square4 | df | p-value | Tukey’s post-hoc | |
|---|---|---|---|---|---|---|---|---|---|
| Montreal Cognitive Assessment (MoCA) | |||||||||
| MoCA score, mean ± SD | 24.12 ± 3.38 | 24.93± 3.34 | 24.30 ± 3.09 | 22.28 ± 3.38 | 4.43 | 2,236 | .013 | W & B > H/O2 | |
| Cognitively impaired based on standard MoCA scoring <26, n (%) | 150 (62.8) | 46 (51.1) | 61 (62.6) | 42 (84.0) | 14.88 | 2 | .001 | ||
| Cognitively impaired based on education- and race-specific cutpoints, n (%) | 92 (38.5) | 33 (36.7) | 19 (19.2) | 40 (80.0) | 52.09 | <0.001 | |||
| Trails Making Test | |||||||||
| TMT-A, mean ± SD | 41.52 ± 19.46 | 39.08 ± 16.41 | 43.13 ± 20.99 | 42.66 ± 21.20 | 1.13 | 2,235 | 0.326 | ||
| TMT-B, mean ± SD | 131.53 ± 86.08 | 104.20 ± 52.09 | 138.23 ± 82.51 | 167.61 ± 121.46 | 9.76 | 2,234 | <0.001 | W > B & H/O2 | |
| TMT-A t-score <=35, n (%) | 34 (16.2) | 16 (18.2) | 7 (7.1) | 4.25 | 1 | .039 | |||
| TMT-B t-score <=35, n (%) | 34 (16.3) | 18 (20.5) | 4 (4.1) | 10.25 | 1 | .001 |
1
Other (N = 16)
2
W = White; B = Black; H/O = Hispanic/Other
3
One-Way ANOVA. The variables that were controlled for include number of chronic conditions and history of head injury, substance use, and either/both HIV or Hepatitis C.
4
Chi-Square Test