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Table 9 Relation between study power and effectiveness

From: Oncologic orphan drugs approved in the EU – do clinical trial data correspond with real-world effectiveness?

  Effectiveness  
Survival benefit > 3 months Survival benefit < 3 months, unknown magnitude or no benefit Total
Study power Adequately powered 6 2 8
Underpowered 0 2 2
  Total 6 4 10