Attempted answers below... -- Marc Carter, PhD Associate Professor and Chair Department of Psychology College of Arts & Sciences Baker University --
> -----Original Message----- > From: [email protected] [mailto:[email protected]] [snip] > > Questions: > > 1) Using this "powerful" test, for every patient correctly > identified as having Alzheimer's, how many patients will be > incorrectly so identified with this devastating diagnosis? Out of 100,000, 1209 will be hits and 13,818 will be false alarms. 91 will be misses, and 84,882 will be correct rejections. I'm thinking of this as "powerful" in the statistical sense that "powerful" means "likely to reject a false null" -- most of the rejections are correct. In a SDT sense, though, it sort of sucks -- that's way too many false alarms. > 2) Do you think this test is as useful as the authors claim? Depends: is the consequence of a false alarm worse than a miss? If so, yeah, it's useful. If not, then not. How'd I do, coaches? m The information contained in this e-mail and any attachments thereto ("e-mail") is sent by Baker University ("BU") and is intended to be confidential and for the use of only the individual or entity named above. The information may be protected by federal and state privacy and disclosures acts or other legal rules. If the reader of this message is not the intended recipient, you are notified that retention, dissemination, distribution or copying of this e-mail is strictly prohibited. If you have received this e-mail in error please immediately notify Baker University by email reply and immediately and permanently delete this e-mail message and any attachments thereto. Thank you. --- To make changes to your subscription contact: Bill Southerly ([email protected])
