Table 2.
Quantification of VEP components and comparison between groups
| Control | Deletion | Duplication | Group comparisons | Pairwise comparisons | |
|---|---|---|---|---|---|
| Good trials | 63 (49) | 60 (39) | 45 (47) | H(2): 0.22, p = 0.894 | – |
| Latency measurements (ms) | |||||
| N1 latency | 60 (15) | 46 (30) | 46 (16) | H(2): 6.85, p = 0.033 | Ctr/Del: p = 0.053 |
| Ctr/Dup: p = 0.099 | |||||
| Del/Dup: p = 1.000 | |||||
| P1 latency | 94 (9) | 92 (12) | 90 (7) | H(2): 1.72, p = 0.422 | – |
| N2 latency | 164 (71) | 164 (44) | 152 (81) | H(2): 0.13, p = 0.937 | – |
| P1-N2 time | 72.0 (66.0) | 72.0 (50.0) | 72.0 (76.0) | H(2): 0.37, p = 0.858 | – |
| Amplitude measurements (uV) | |||||
| N1 amp | −4.5 (5.1) | −1.2 (5.4) | −3.4 (4.3) | H(2): 3.97, p = 0.137 | – |
| P1 amp | 10.4 (8.1) | 15.7 (11.2) | 5.4 (9.5) | H(2): 11.92, p = 0.003 | Ctr/Del: p = 0.088 |
| Ctr/Dup: p = 0.628 | |||||
| Del/Dup: p = 0.003 | |||||
| N2 amp | −0.94 (11.5) | −7.45 (7.3) | −3.19 (7.2) | H(2): 1.55, p = 0.460 | – |
| N1-P1 amp | 15.0 (17.5) | 16.9 (6.1) | 8.3 (11.1) | H(2): 6.81, p = 0.033 | Ctr/Del: p = 1.000 |
| Ctr/Dup: p = 0.226 | |||||
| Del/Dup: p = 0.028 | |||||
| P1-N2 amp | 12.9 (17.6) | 19.7 (16.4) | 8.1 (10.3) | H(2): 10.48, p = 0.005 | Ctr/Del: p = 0.207 |
| Ctr/Dup: p = 0.455 | |||||
| Del/Dup: p = 0.005 | |||||
Median values (interquartile range) are reported. Amp: amplitude. Pairwise comparisons with adjusted p values were performed if the overall group comparison was significant (p < 0.05). Significant results are in bold