>did SGP say which arm had the 9% discontinuations?<
No.
>I suppose it was the one with the highest SVR rate of 74%.<
Probably, but not necessarily. On the one hand, it does seem reasonable to infer that the delta of 8 percentage points (74% vs 66%) seen in the 48-week run-in arm relative to the 48-week arm without run-in was due to a smaller % of dropouts in the run-in arm. On the other hand, one would ordinarily expect 48-week arms to have a higher dropout rate than 28-week arms, which suggests that the 9% dropout rate could conceivably come from one of the 28-week arms.
“The efficient-market hypothesis may be
the foremost piece of B.S. ever promulgated
in any area of human knowledge!”