Modified Haybittle–Peto group sequential designs for testing superiority and non-inferiority hypotheses in clinical trials

2006 ◽  
Vol 25 (7) ◽  
pp. 1149-1167 ◽  
Author(s):  
Tze Leung Lai ◽  
Mei-Chiung Shih ◽  
Guangrui Zhu
2008 ◽  
Vol 13 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Sevil Bacanlı ◽  
Özgür Peker ◽  
Yaprak Demirhan

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