Statistical analysis of changes in VF with VPA relative to typical loss in RP patients
| Null hypothesis mean change with no treatment | Significance (two-sided) of signed rank test | ||
| Left eyes | Right eyes | All eyes combined | |
| 0 | 0.31 | 0.11 | 0.05 |
| −0.011 | 0.22 | 0.08 | 0.02 |
| −0.033 | 0.09 | 0.05 | 0.006 |
RP, retinitis pigmentosa; VF, visual field; VPA, valproic acid.