Report a relative proportion of patients ruled-out or ruled-in with a diagnostic test

One measure of the performance of a diagnostic test is the proportion of patients the test stratifies as likely not to have the condition (ruled-out:RO) or to have the condition (ruled-in:RI). This proportion depends on the prevalence of the disease in the cohort. This means that it is not valid...

By John William Pickering

Pre-registration of a test for statistical significance of a GALFA-HI -- WMAP ILC correlation

In 2007 Gerrit Verschuur [proposed](http://dx.doi.org/10.1086/522685) that HI structures as seen in the Leiden-Argentina-Bonn 36' HI survey of the sky are correlated with structures in the WMAP sky, which are typically ascribed to the CMB. He has recently proposed to see WMAP correlations in...

By Joshua Peek