Table 2.
Raw Neuropsychological Test Score Means and Statistical Comparisons by Serostatus and Crack, Cocaine, and/or Heroin Use.
| Group | |||||||
|---|---|---|---|---|---|---|---|
| Infected (n=952) | Uninfected (n=443) | ||||||
|
|
|||||||
| Tests | n | Recent (n=91) M (SD) | Former (n=463) M (SD) | Non-users (n=398) M (SD) | Recent (n=49) M (SD) | Former (n=188) M (SD) | Non-users (n=206) M (SD) |
| HVLT | |||||||
| Trial 1 | 1395 | 5.23 (1.84) | 5.47 (1.66) | 5.83 (1.67) | 6.12 (1.45) | 5.59 (1.69) | 5.95 (1.69) |
| Total learning | 1395 | 19.46 (5.26) | 21.17 (5.22) | 22.44 (4.82) | 23.47 (4.34) | 21.92 (4.85) | 23.26 (4.75) |
| Learning slope | 1395 | 1.31 (0.34) | 1.45 (0.35) | 1.52 (0.31) | 1.59 (0.26) | 1.50 (0.29) | 1.58 (0.30) |
| Delayed recall | 1395 | 6.26 (2.40) | 7.265 (2.60) | 8.03 (2.46) | 8.02 (2.18) | 7.76 (2.45) | 8.34 (2.34) |
| Percent retention | 1395 | 81.13 (29.71) | 83.73 (25.76) | 88.40 (21.13) | 85.36 (19.84) | 87.11 (23.40) | 88.36 (19.77) |
| Recognition | 1390 | 9.59 (2.29) | 10.08 (2.01) | 10.24 (1.99) | 10.29 (2.28) | 10.49 (1.75) | 10.75 (1.50) |
| Stroop Test | |||||||
| Trials 1&2a | 1313 | 67.79 (26.02) | 63.83 (15.57) | 60.71 (13.53) | 61.49 (14.32) | 61.91 (13.88) | 58.46 (10.65) |
| Trial 3a | 1247 | 140.34 (42.60) | 132.35 (36.21) | 126.09 (33.82) | 126.37 (26.87) | 125.50 (32.63) | 120.37 (26.55) |
Note. HVLT = Hopkins Verbal Learning Test.
a
Unadjusted means are displayed, but log-transformed scores were used in the statistical comparisons.