NorthWest Biotherapeutics Inc (NWBO)

[CogDiss 1188X]

2 year PFS Optune arm = only 6% had not progressed.
2 year PFS SOC arm= only 4% had not progressed.
Virtually identical by two years.

But there was a 50% (relative) increase in 2 year PFS!

Which is true but misleading. Those kind of statistical shenanigans are too common in trial announcements. It’s always good to know if relative or absolute changes are being quoted, as well as off what base.