Table 2.
Cohort characteristics and comparative analysis between normal and abnormal vision Groups. Numerical variables are presented as mean ± SD. For binary clinical features, both the percentage and absolute number of patients are shown. Numerical variables were compared using the independent t-test or Mann–Whitney U test, based on the Shapiro–Wilk normality test. Categorical variables were compared using the Chi-square or fisher’s exact test, as appropriate. The test used is indicated by a superscript: † Mann–Whitney U; ‡ Chi-square; § fisher’s exact. Significant p-values (p < 0.05) are shown in bold.
| Total Measurements | All patients (n = 168) |
Normal (n = 115) |
Abnormal (n = 53) |
p-Value |
|---|---|---|---|---|
| 515 | 321 | 194 | - | |
|
Age (years) at first visit (mean ± std) |
8.9 ± 3.9 | 8.6 ± 3.8 | 9.5 ± 4.1 | 0.2† |
| Number of Visits per patient (mean ± std) | 3.0 ± 1.8 | 2.8 ± 1.8 | 3.7 ± 1.9 | 0.003 † |
| OPG (% of patients) | 35% (59) | 23% (27) | 60% (32) | < 0.0001 ‡ |
| Lisch Nodules (% of patients) | 2% (87) | 51% (59) | 53% (28) | 0.98‡ |
| Choroidal Nodules (% of patients) | 26% (44) | 28% (32) | 23% (12) | 0.60‡ |