Table 1.
Characteristics of the two study cohorts found previously to influence RNFL thickness
| |
Cohort 1 (n=328) |
Cohort 2 (n=97) |
P-value1 |
|---|---|---|---|
| Mean (SD) Age [range] |
47 (16) [18, 85] |
45 (15) [20, 82] |
0.28 |
| Mean (SD) Spherical equivalent [range] |
-0.54 (1.88) [-11.75, 6.75] |
-0.90 (2.2) [-7.88, 4.50] |
0.14 |
| Disc Size | <0.001 | ||
| Small | 90 (30%) | 9 (12%) | |
| Medium | 122 (40%) | 67 (87%) | |
| Large | 91 (30%) | 1 (1%) | |
| Unspecified2 |
25 |
20 |
|
| Ethnicity | <0.001 | ||
| Hispanic | 80 (25%) | 42 (43%) | |
| Asian | 11 (3%) | 9 (9%) | |
| All others | 236 (72%) | 46 (47%) | |
| Unspecified2 | 1 | 0 |
1
Two-sample t-test for age and spherical equivalent, chi-square for disc size and ethnicity
2
The category, unspecified, was not included in the calculation of chi-square