Author: Y. Foucher, E. Dantan, F. Le Borgne, and M. Lorent
Description: Contains functions in order to estimate diagnostic and prognostic capacities of continuous markers. More precisely, one function concerns the estimation of time-dependent ROC (ROCt) curve, as proposed by Heagerty et al. (2000) <doi:10.1111/j.0006-341X.2000.00337.x>. One function concerns the adaptation of the ROCt theory for studying the capacity of a marker to predict the excess of mortality of a specific population compared to the general population. This last part is based on additive relative survival models and the work of Pohar-Perme et al. (2012) <doi:10.1111/j.1541-0420.2011.01640.x>. We also propose two functions for cut-off estimation in medical decision making by maximizing time-dependent expected utility function. Finally, we propose confounder-adjusted estimators of ROC and ROCt curves by using the Inverse Probability Weighting (IPW) approach.  For the confounder-adjusted ROC curve (without censoring), we also proposed the implementation of the estimator based on placement values proposed by Pepe and Cai (2004) <doi:10.1111/j.0006-341X.2004.00200.x>.

Title: Non-parametric estimation of ROC curves without Gold Standard
Description: Function to estimate the ROC Curve of a continuous-scaled
diagnostic test with the help of a second imperfect diagnostic

Depends: ODBC support and a back end database

Maintainer: B. D. Ripley <ripley@stats.ox.ac.uk>

Author: Originally Michael Lapsley <mlapsley@sthelier.sghms.ac.uk>,
later B. D. Ripley <ripley@stats.ox.ac.uk>

since Oct 2002 B. D. Ripley <ripley@stats.ox.ac.uk>
SystemRequirements: An ODBC driver manager and drivers. See README.
Packaged: Tue Sep 14 11:21:37 2004; ripley

Packaged: Sun Oct 24 11:05:20 2004; ripley

Packaged: Mon Feb  7 08:32:20 2005; ripley

Packaged: Thu Aug  4 10:04:36 2005; ripley

from Oct 2002 B. D. Ripley <ripley@stats.ox.ac.uk>
Packaged: Tue Jan 10 09:05:50 2006; ripley

Packaged: Tue Apr  4 17:36:30 2006; ripley

Packaged: Thu May 25 08:03:30 2006; ripley