Table 2.
Characteristics of Individual Profiles
| Profile | Statistics | ||||
|---|---|---|---|---|---|
| One | Two | Three | χ2 or F (p value) | Effect sizes 1 vs. 3 Cohen’s d or h | |
| N= | 578 | 1012 | 1314 | ||
| Age (years)a | 41.4 (11) | 40.1 (9.4) | 38.7 (9.7) | 16.8(< 0.001) | 0.27 |
| Educationa | 14.8 (5.9) | 15.2 (3.8) | 15.37 (3.6) | 3.4 (0.03) | 0.13 |
| Race (white)b | 56 (326) | 72 (724) | 73 (959) | 55.8 (< 0.001) | 0.22 |
| HIV Infectedb | 53 (307) | 52 (530) | 53 (694) | 0.09 (0.96) | 0 |
| Cohort 1b | 49 (283) | 64 (648) | 64 (839) | 43.6 (< 0.001) | 0.18 |
| Smokinga | 13.58 (19.28) | 13.59 (18.17) | 10.96 (16.69) | 15.6 (< 0.001) | 0.15 |
| Alcohol Use (4+ Drinks/Week)b | 33 (185) | 40 (394) | 42 (539) | 21.0 (0.002) | 0.10 |
| Marijuanab | 37 (211) | 44 (439) | 42 (549) | 7.09 (0.029) | −.057 |
| Cocaineb | 18 (105) | 20 (199) | 18 (230) | 1.82 (0.40) | 0.007 |
| Uppersb | 7.8 (43) | 8.7 (83) | 9.3 (115) | 1.08 (0.58) | −.015 |
| Opiatesb | 3.5 (19) | 3.6 (33) | 2.7 (31) | 1.82 (0.40) | 0.008 |
| Intravenous Drug Useb | 6 (36) | 5 (47) | 4 (53) | 4.4 (0.11) | 0.02 |
| Estimated IQa | 98 (16) | 104 (13) | 108 (11) | 160.4 (< 0.001) | 0.43 |
| CES-Da | 13 (12) | 11 (10) | 11 (10) | 11 (< 0.001) | 0.23 |
| CD4+ Count*a | 523.69 (286.86) | 520.42 (279.12) | 487.82 (260.57) | 5.77 (0.06) | 0.13 |
| Nadir CD4+ Count*a | 299.86 (232.8) | 247.89 (206.3) | 240.31 (208.8) | 8.72 (0.00017) | 0.28 |
| Log (Viral Load)*a | 3.05 (1.49) | 3.19 (1.52) | 3.19 (1.50) | 0.66 (0.52) | −.09 |
| NP T-Scores | |||||
| Motora | 36.1 (12.1) | 49.4 | 49.7 (7.5) | 597 (<0.0001) | 1.5 |
| Learninga | 44.6 (9.3) | 43.8 (7.2) | 56.5(5.6) | 1116 (<0.0001) | 1.7 |
| Memorya | 44.7 (9.1) | 43.6 (7.3) | 57 (5.4) | 1283 (<0.0001) | 1.8 |
| Speeda | 45.9 (12) | 49.5 (7) | 51.5 (7.7) | 90 (<0.0001) | 0.61 |
| Executivea | 42.9 (12) | 50.2 (7.5) | 52.8 (7.8) | 263 (<0.0001) | 1.1 |
| Normal Cognitionb | 37 (213) | 74 (744) | 95(1245) | 864.7 (< 0.001) | 0.87 |
a
Continuous variables: data provided as mean (SD, test statistic provided as F (p), effect size reported as Cohen’s d.
b
Categorical variables: data provided as percent (N), test statistic provided as X2 (p), effect size reported as Cohen’s h
*
Restricted to HIV+ participants only