"Absolute risk or relative risk? Sometimes, scientists like to use relative risk to make their results sound more impressive. If a treatment reduces the risk of a disease from 2% to 1%, the absolute risk reduction is 1%. Treatment or no treatment, your absolute risk of getting the disease is pretty small. However, you could also truthfully say that the treatment reduces the risk by 50%. This sounds more impressive, but it gives a skewed impression of how valuable the treatment actually is."
Here is more about reading medical research:
Introduction to Evidence Based Medicine (video by Dr. Rahul Patwari)An Introduction to Evidence Based Medicine is another very good discussion of the roles of research and evidence in medical practice. The speaker discusses the strong and weak points of this approach.
How to Appraise a Clinical Trial Part 1 Part 2 Part 3
For those wanting those of you wanting to go into this topic in much more depth, the book "Users' Guides to the Medical Literature: A Manual for Evidence-Based Clinical Practice, 3rd ed" is often used in medical schools to teach this concept.
Lecture 1 - Lay of the Land - Reading and Interpreting Cancer Trials Series
Here are some additional resources that I have found helpful:
General:
University of Michigan anatomy curricula
The Brain and Nervous System:
The DANA Foundation (research and information about the brain)
Chiari & Syringomyelia Foundation
Speech and Breathing:
Bastian Medical Media Laryngopedia (info about swallowing, voice problems, upper airway problems, cough, and certain pain disorders)
The Oley Foundation
Connective Tissue:
EDS Awareness (Ehlers-Danlos Syndrome)