Table 4.
Correlations between differences in RNFL thickness measurements (RNFL2-RNFL1) and SS2 and differences in signal strength (SS2-SS1) using Spearman correlations.
| Spearman Correlation Coefficient with (RNFL2 - RNFL1) | p-value | |
|---|---|---|
| SS2 | ||
| All RNFL averages | -0.04 | 0.61 |
| RNFL average < 90 microns | 0.15 | 0.17 |
| RNFL average ≥ 90 microns | -0.25 | 0.03 |
| SS2 - SS1 | ||
| All RNFL averages | 0.20 | 0.01 |
| RNFL average < 90 microns | 0.30 | 0.004 |
| RNFL average ≥ 90 microns | 0.09 | 0.46 |
| SS2 - adjusted for (SS2-SS1) | ||
| All RNFL averages | -0.20 | 0.01 |
| RNFL average < 90 microns | -0.09 | 0.41 |
| RNFL average ≥ 90 microns | -0.32 | 0.006 |
| (SS2-SS1) - adjusted for SS2 | ||
| All RNFL averages | 0.27 | 0.0004 |
| RNFL average < 90 microns | 0.28 | 0.008 |
| RNFL average ≥ 90 microns | 0.22 | 0.05 |