Observational Studies and Experimental Studies

Research studies can be divided into two types: observational studies and experimental studies. Observational studies simply observe the effect of a variable in a population. They can assess the strength of a relationship, for instance between dietary factors and disease. Are vegetarians less likely to develop cancer? Are patients treated with a new diabetes drug

Psychology and Psychotherapy: How Much Is Evidence-Based?

Despite all those Polish jokes, Poland has its share of good scientists and critical thinkers. A superb new book illustrates that fact in spades: Psychology Gone Wrong: The Dark Side of Science and Therapy, by Tomasz Witkowski and Maciej Zatonski, http://www.amazon.com/Psychology-Gone-Wrong-Science-Therapy/dp/1627345280  Witkowski is a psychologist, science writer, and founder of the  Polish Skeptics Club; Zatonski

Fun With Statistics

Statistics is the essential foundation for science-based medicine.  Unfortunately, it’s a confusing subject that invites errors and misunderstandings.  We non-statisticians could all benefit from learning more about statistics as well as trying to get a better understanding of just how much we don’t know. Most of us are not going to read a statistics textbook,

Snake Oil Science

For my first blog entry, I wanted to write about something important, and I couldn’t think of anything more important than a recent book by R. Barker Bausell: Snake Oil Science: The Truth About Complementary and Alternative Medicine. If you want to understand how medical research works, if you want to know what can lead

Scroll to top