To determine why many diagnostic tests have proved to be valueless after optimistic introduction into medical practice, we reviewed a series of investigations and identified two...
Despite major laboratory advances in molecular genetic analysis, our data suggest that reported applications in clinical journals often have troubling omissions, deficiencies, a...
After completing a research project, an investigator encounters several different challenges in the management of data. One of these challenges is in organizing and analyzing th...
We performed a Monte Carlo study to evaluate the effect of the number of events per variable (EPV) analyzed in logistic regression analysis. The simulations were based on data f...
The analytical effect of the number of events per variable (EPV) in a proportional hazards regression analysis was evaluated using Monte Carlo simulation techniques for data fro...
Multivariable methods of analysis can yield problematic results if methodological guidelines and mathematical assumptions are ignored. A problem arising from a too-small ratio o...
h-index: Number of publications with at least h citations each.