Table 1.
Summary of Marginal RNFL Thickness (MRT) values for all patients (N=165, binomial probability)
| SS2 \ SS1 | 5 | 6 | 7 | 8, 9, or 10 |
|---|---|---|---|---|
| 6 | Positive = 46, | |||
| Negative = 23, | -- | -- | -- | |
| p=0.0020 | ||||
| 7 | Positive = 25, | Positive = 23, | ||
| Negative = 7, | Negative = 7, | -- | -- | |
| p=0.0008 | p=0.0019 | |||
| 8, 9, or 10 | Positive = 8, | Positive = 4, | Positive = 5, | Positive = 1, |
| Negative = 3, | Negative = 1, | Negative = 9, | Negative = 3, | |
| p=0.081 | p=0.16 | p=0.12 | p=0.25 |
SS1 = the lower of two signal strengths
SS2 = the higher of two signal strengths
RNFL1 = RNFL thickness measured by the scan with lower signal strength, microns
RNFL2 = RNFL thickness measured by the scan with higher signal strength, microns
MRT = (RNFL2-RNFL1) / (SS2-SS1)
A positive MRT means that the RNFL thickness measurement is higher in the scan with the greater signal strength, and vice versa.