Table 3.
Performances in VOSP subtests, number of patients scoring under 5%ile pairwise and comparison between groups.
| Patient groups | tAD | PCA1 | PCA2 | Pairwise comparison |
||||
|---|---|---|---|---|---|---|---|---|
| PCA2 vs PCA1 |
PCA2 vs tAD |
|||||||
| N | 18 | n (%) under 5%ile | 16 | n (%) under 5%ile | 5 | n (%) under 5%ile | pa | pa |
| Screening (figure-ground discrimination) | 18.5 ± 2.4 | 10 (45%) | 13.4 ± 6.4 | 10 (62%) | 14.8 ± 5.4 | 4 (80%) | 0.70 | 0.06 |
| Incomplete letters | 12.2 ± 6.7 | 11 (61%) | 3.8 ± 5.8 | 14 (88%) | 7.0 ± 6.9 | 4 (80%) | 0.18 | 0.13b |
| Silhouettes | 12.0 ± 6.4 | 6 (27%) | 7.5 ± 5.8 | 15 (93%) | 7.6 ± 7.9 | 4 (80%) | 0.97b | 0.20b |
| Dot counting | 7.2 ± 3.6 | 2 (11%) | 5.0 ± 3.7 | 10 (62%) | 6.8 ± 4.3 | 2 (40%) | 0.31 | 0.90 |
| Position discrimination | 14.3 ± 5.9 | 8 (44%) | 10.1 ± 5.3 | 13 (81%) | 9.8 ± 5.1 | 4 (80%) | 0.77b | 0.06 |
| Number location | 5.1 ± 4.1 | 8 (44%) | 1.0 ± 1.3 | 16 (100%) | 3.6 ± 4.1 | 3 (60%) | 0.03b | 0.44 |
| Cube analysis | 5.8 ± 3.8 | 10 (45%) | 1.0 ± 1.3 | 16 (100%) | 3.6 ± 4.5 | 3 (60%) | 0.32 | 0.27b |
| % of patients failing at least 1 visual test | 10 (55%) | 16 (100%) | 5 (100%) | |||||
Performances expressed in mean ± SD. Bold means statistically significant. Italics means trends towards significance.
a
Mann-Whitney U test (except indicated).
b
Unpaired t-test.