Tag: false positives

Itatiaia-242

Corrigendum. The Week in Review for 03/19/2017

What happened this week? Measles returns to kill. Stem cell injections blind. Lousy acupuncture studies. Fire hot. Skinny jeans are not a reason to see a chiropractor. Lesbian tendencies do not respond to homeopathy. And more.

/ March 19, 2017
puncturehead

Acupuncture and Migraine – New JAMA Study

Yet another poorly designed acupuncture study with dubious results is being presented as if it were compelling evidence.

/ February 22, 2017
Mammography

The American Cancer Society’s new mammography guidelines: Déjà vu all over again

One of the things that feels the weirdest about having done the same job, having been in the same specialty, for a longer and longer time is that you frequently feel, as the late, great Yogi Berra would have put it, déjà vu all over again. This is particularly true in science and medicine, where the same issues come up again and...

/ October 21, 2015
Test tubes screening test

Why False Positive Results Are So Common In Medicine

Have you ever been surprised and confused by what seem to be conflicting results from scientific research? Have you ever secretly wondered if the medical profession is comprised of neurotic individuals who change their mind more frequently than you change your clothes? Well, I can understand why you’d feel that way because the public is constantly barraged with mixed health messages. But why...

/ July 23, 2009
OLYMPUS DIGITAL CAMERA

Screening Tests – Cumulative Incidence of False Positives

It’s easy to think of medical tests as black and white. If the test is positive, you have the disease; if it’s negative, you don’t. Even good clinicians sometimes fall into that trap. Based on the pre-test probability of the disease, a positive test result only increases the probability by a variable amount. An example: if the probability that a patient has...

/ June 30, 2009