Sunday, September 30, 2007

Enter and die at the same time

Stata does not allow a subject enters the risk set and dies at the same time, here is an explanation:

Saturday, September 08, 2007

Human interface device

Sometimes not all tray icons show up (after a new boot). This can be caused by a unexpected stop in the human interface device. Re-start that service and reboot the computer should solve the problem.