There has been some recent work in the statistical literature for modeling the relationship between the size of cancers and probability of detecting metastasis, i.e., aggressive disease. Methods for assessing covariate effects in these studies are limited. In this article, we formulate the problem as assessing covariate effects on a right-censored variable subject to two types of sampling bias....

Mixed arithmetic and geometric means, with and without weights, are both considered. Related to mixed arithmetic and geometric means, the following three types of inequalities and their generalizations, from three variables to a general n variables, are studied. For arbitrary x, y, z ≥ 0 we have [ x + y + z 3 (xyz) ]1/2 ≤ ( x + y 2 · y + z 2 · z + x 2 )1/3 , (A) 1 3 (√ xy + √ yz + √ zx ) ≤ 1 2 ...

2005;330;576-580 BMJ Shennan, Angela Tuffnell, Sara Twaddle and Jason Waugh Murphy, Catherine Nelson-Piercy, Vicky Osgood, Stephen Robson, Andrew Carol Cooper, Michael de Swiet, Gillian Fletcher, Mervi Jokinen, Deirdre Fiona Milne, Chris Redman, James Walker, Philip Baker, Julian Bradley, of pre-eclampsia in the community (PRECOG): how to screen for and detect onset The pre-eclampsia community ...