%0 Journal Article %T On Some Aspects of Conditional Power Evaluation In Two-phase Clinical Trials Under Linear Regression %A A. S. Hedayat %A Bikas K. Sinha %A Li Wei %J Pakistan Journal of Statistics and Operation Research %D 2012 %I University of the Punjab %R 10.1234/pjsor.v8i3.516 %K Interim analysis %K Regression models %K Conditional probability %U http://www.pjsor.com/index.php/pjsor/article/view/516