Table 2.
Implicit times and amplitudes of the multifocal ERG P1 response in Rings 1–5 and “Sum of groups” in the right eyes in the preterm group and in right or left eyes in the control group
| Preterm group n = 15 | Control group n = 12 | p value | |
|---|---|---|---|
| P1 implicit time (ms) median (range) | |||
| Ring 1 | 29.2 (25.0–30.8) | 27.9 (25.8–30.0) | 0.26 |
| Ring 2 | 28.3 (24.2–30.0) | 27.1 (25.0–29.2) | 0.14 |
| Ring 3 | 27.5 (23.3–30.0) | 26.7 (25.0–28.3) | 0.18 |
| Ring 4 | 28.3 (24.2–29.2) | 26.7 (25.0–29.2) | 0.26 |
| Ring 5 | 28.3 (25.0–30.0) | 27.1 (25.0–30.8) | 0.50 |
| Sum of groups | 28.3 (24.2–30.0) | 27.1 (25.0–30.0) | 0.37 |
| P1 amplitude (nV/deg2) median (range) | |||
| Ring 1 | 27.6 (10.1–45.5) | 40.7 (21.7–51.4) | 0.01 |
| Ring 2 | 19.1 (7.6–31.4) | 27.8 (16.3–35.8) | 0.02 |
| Ring 3 | 16.5 (6.3–24.2) | 22.8 (12.9–29.6) | 0.02 |
| Ring 4 | 13.9 (6.0–20.0) | 18.7 (11.0–26.3) | 0.01 |
| Ring 5 | 11.9 (5.5–18.5) | 16.9 (10.3–25.6) | 0.01 |
| Sum of groups (uV) | 19.2 (8.2–38.3) | 24.7 (13.5–31.5) | 0.05 |
Bold values indicate statistically significant p-values