highly significantP = 0.0011
The resulting difference between treatment groups for the mean change in visual acuity of individual eyes from baseline of RHODOS to the RHODOS–OFU study visit was highly significant, logMAR −0.228 (11 letters; P = 0.0011; Table 2 ), in favour of the idebenone group for patients carrying one of the three primary mitochondrial DNA mutations and logMAR −0.283 (14 letters, P = 0.0002) for patients carrying either the m.11778G>A or m.3460G>A mutation.