Diagnosis Task

Note: This large applet may take some time to load. Please be patient.

The participants task in this diagnosis context is to examine a subset of the large number of cases below to determine the diagnostic validity of mammograms for a particular set of patients. Positive and negative mammogram results are indicated by M+ and M- on the cards when they are first displayed and correspond to the colors yellow (for warning) and white, respectively. Actual cancer or not is indicated by C+ and C- on the "reverse" of the cards displayed when clicked and correspond to the colors red (for danger) and greent (for OK). The constructors for the four types of cards are:

add(new Card("M+",Color.yellow,"C+",Color.red,12)); add(new Card("M+",Color.yellow,"C-",Color.green,12)); add(new Card("M-",Color.white,"C+",Color.red,12)); add(new Card("M-",Color.white,"C-",Color.green,12)); The additional "12" parameter indicates the smaller font size necessary to be able to display a large number of cards.

Click on 20 cases below to assess the diagnostic usefulness of mammograms for this sample of patients.

The source code is a bit more complicated than the earlier examples because cards are randomly assigned with the constraint of matching specified population proprotions.
View source code