Trial Outline Builder Screenshots
A research project I am working on has resulted in the Trial Outline Builder, or TOB. This is a support tool for clinical trials. It helps people design trials, it helps with data collection when running trials, and it helps you explore the data collected during trials.
The system was built using "Webbles", a form of pluggable software objects. This made it easy to prototype new functionality in the system.
Here are some screenshots of what the system looks like (click on the images to make them bigger):
This is the mode for designing trials. On the left there is a repository of medical events applicable to a trial (on cancer in this case), such as radio therapy events, surgery events etc. You can drag and drop events from the repository into the flow chart on the right. There you can drag around events, change their properties, etc., through direct manipulation.
When a trial has been designed and is running, the TOB can also be used for data collection. On the top we have the overview of the flow of the whole trial, and below we have the individual treatment plan of one specific patient in the trial. The blacked out parts in the trial plan are parts of the trial that this patient will not go into (because the patient is in a different track), and the whiteish parts are parts of the trial that the patient has not entered yet (are still in the future).
The TOB also allows for exploration of the collected data. Many different visualization components are available, such as charts, Life Tables, parallel coordinates, image maps, heat maps, and more. Subsets of patients based on different chriteria can be selected, filtered, and grouped.
Here the user has grouped patients based on the treatment received (randomization group A, randomization group B, and no randomization) and contrasted these groups against each other in a life table on the right. There seems to be very little difference between group A and B, but patients in the no randomization group have a much lower survivability. This was because patients with metastatic cancer were all placed in the no randomization group, and if the cancer has already spread throughout the body the chance of survivability is of course lower.
Here is a simple movie clip showing the basics of building a trial using the TOB: 22 Mb movie clip.