It is not possible to understand the clinical impact of the incorrect 1mg and/or placebo doses. Even if details on how many doses were actually given incorrectly (placebo arm receiving 1mg bavi or vice versa), it is really futile to try discern the clinical impact of such errors.
Even though it is impossible to discern a clinical impact, does that mean we can't even speculate that the control arm MOS might have been shorter and the 1mg Bavi MOS might have been longer w/o the mixup(s)?