Practical power analysis for substance abuse health services research.

Author(s):  
Michael L. Dennis ◽  
Richard D. Lennox ◽  
Mark A. Foss
2005 ◽  
Vol 35 (3) ◽  
pp. 457-459
Author(s):  
J. Aaron Johnson ◽  
Lori J. Ducharme ◽  
Hannah K. Knudsen ◽  
Paul M. Roman

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