Table 3.
Proportion One Standard Deviation Below the Sample Mean
| Full Sample (N=61) |
PHIV Participants (N=33) |
PHEU Participants (N=28) |
|||
|---|---|---|---|---|---|
| Test | % (N) | % (N) | % (N) | X2 | p |
| TM 1a† | 9.8 (6) | 3.0 (1) | 17.9 (5) | 3.76 | 0.09 |
| TM 3a† | 8.2 (5) | 6.0 (2) | 10.7 (3) | 0.44 | 0.66 |
| VD 1a‡ | 14.8 (9) | 12.1 (4) | 17.9 (5) | 0.40 | 0.72 |
| VD 2a‡ | 11.5 (7) | 12.1 (4) | 10.7 (3) | 0.03 | 1.00 |
| NSpeeda† | 3.3 (2) | 3.0 (1) | 3.6 (1) | 0.01 | 1.00 |
| NS (F)b‡ | 11.5 (7) | 21.2 (7) | 0.0 (0) | 6.71 | 0.01 |
| NS (B)b‡ | 19.7 (12) | 24.2 (8) | 14.3 (4) | 0.95 | 0.35 |
| TM 2c† | 13.1 (8) | 12.1 (4) | 14.3 (4) | 0.04 | 1.00 |
| TMT Aa† | 13.1 (8) | 12.1 (4) | 14.3 (4) | 0.06 | 1.00 |
| DS (F)b‡ | 11.5 (7) | 15.2 (5) | 7.1 (2) | 0.96 | 0.43 |
| DS (B)b‡ | 21.3 (13) | 36.3 (12) | 3.6 (1) | 9.71 | 0.00 |
| TMT Bc† | 14.8 (9) | 12.1 (4) | 14.3 (4) | 0.01 | 1.00 |
Note: test of:
a
processing speed
b
working memory
c
executive functioning
NeuroScreen Tests: TM 1, TM 2, and TM 3 = Trail Making 1, 2, and 3; VD 1 and VD 2 = Visual Discrimination 1 and 2; NS (F) and NS (B) = Number Span Forwards and Backwards; NSpeed = Number Speed. Gold-Standard Tests: TMT A and TMT B = Trailmaking Test A and B; DS (F) and DS (B) = Digit Span Forwards and Backwards.