Effectiveness research and implications for study design: sample size and statistical power - evaluating the cost-effectiveness of improving care for depression

Author: Sturm R.   Unutzer J.   Katon W.  

Publisher: Elsevier

ISSN: 0163-8343

Source: General Hospital Psychiatry, Vol.21, Iss.4, 1999-07, pp. : 274-283

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