Construction of group sequential designs in clinical trials on the basis of detectable treatment differences

2004 ◽  
Vol 23 (9) ◽  
pp. 1413-1424 ◽  
Author(s):  
Helmut Schäfer ◽  
Hans-Helge Müller
2008 ◽  
Vol 13 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Sevil Bacanlı ◽  
Özgür Peker ◽  
Yaprak Demirhan

Biometrics ◽  
1973 ◽  
Vol 29 (3) ◽  
pp. 471 ◽  
Author(s):  
G. L. Elfring ◽  
J. R. Schultz

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