Table 2.
Sample characteristics for NCI and WNL groups
| Variable | NCIa (n = 31) | WNLb (n = 178) | ct / χ2 (df) | p-value |
|---|---|---|---|---|
| Age (M, SD) | 40.6 (8.4) | 37.2 (8.6) | −2.03 (207) | .04 |
| Gender, n (%) male | 22 (71.0) | 128 (71.9) | .01 (1) | .91 |
| Race/Ethnicity, n (%) | 6.08 (3) | .12 | ||
| Euro American | 4 (12.9) | 60 (33.7) | ||
| African American | 12 (38.7) | 62 (34.8) | ||
| Hispanic | 13 (41.9) | 49 (27.5) | ||
| Other | 2 (6.5) | 7 (3.9) | ||
| Educational Attainment, n (%) | 5.47 (4) | .24 | ||
| ≤ Some High School | 8 (25.8) | 25 (14.1) | ||
| High School Graduate | 5 (16.1) | 30 (16.9) | ||
| Some College | 13 (41.9) | 68 (38.4) | ||
| College Graduate | 2 (6.5) | 38 (21.5) | ||
| Graduate Degree | 3 (9.7) | 16 (9.0) | ||
| CD4 Count (M, SD) | 283.2 (126.5) | 330.0 (121.2) | 1.97 (207) | .05 |
| Antiretroviral Status, n (%) | 3.74 (2) | .29 | ||
| No medication | 5 (16.1) | 36 (20.2) | ||
| Combination therapye | 14 (45.2) | 51 (28.7) | ||
| HAARTf | 12 (38.7) | 91 (51.1) | ||
| Beck Depression Inventory-II (M, SD) | 13.8 (9.3) | 11.1 (8.8) | −1.57 (207) | .12 |
| HDS Total (M, SD) | 8.8 (1.4) | 14.5 (1.6) | 18.77 (207) | <.001 |
| Antisaccade Task (M, SD) | 2.7 (1.6) | 3.7 (0.9) | 3.08 (207) | .004 |
| Psychomotor Speed (M, SD) | 2.1 (2.3) | 5.6 (0.9) | 8.30 (207) | <.001 |
| Memory (M, SD) | 3.2 (1.0) | 3.7 (0.6) | 2.97 (207) | .006 |
| Construction (M, SD) | 0.7 (0.9) | 1.5 (0.8) | 4.37 (207) | <.001 |
Notes. HDS= HIV-Dementia Scale.
a
NCI= neurocognitive impairment group (HDS total score ≤ 10).
b
WNL = neurocognitively within normal limits (HDS total score >10).
c
Statistic is t-value for continuous variables (age, CD4 count, viral load, HDS total and subtests) and chi-square value for categorical variables (gender, race/ethnicity, income, employment status, route of infection, educational attainment, antiretroviral status).
e
Combination antiretroviral therapy without protease inhibitors.
f
Highly active antiretroviral therapy with protease inhibitors.