Category Archives: percentage change from baseline

18. Percentage Change from Baseline – Great or Poor?

Everything should be made as simple as possible, but no simpler. – Attributed to Albert Einstein *** In my third and forth blog I addressed useful ways to present the results of an analysis.  Of course, p-values wasn’t it.  I … Continue reading

Posted in Analysis of Covariance, assumptions, Effect Size, heteroscedasticity, non-normality, percentage change from baseline | 18 Comments

22. A question on QoL, Percentage Change from Baseline, and Compassionate-Usage Protocols

Yesterday was 1 degree Fahrenheit and today is 10.  I’m ten times warmer!! Compassion?  We statisticians have evolved beyond such petty human affects. I received the following question from Simon Wilkinson from New Zealand:  Dear Allen. To set the scene, … Continue reading

Posted in Confidence intervals, Design, Interval, Nominal, Ordinal, percentage change from baseline, Statistics, Treatment Effect | 2 Comments

24. Simple, but Simple-Minded

Science is organized common sense where many a beautiful theory was killed by an ugly fact. – Thomas Huxley It really is a nice theory.  The only defect I can think it has is probably common to all philosophical theories. … Continue reading

Posted in assumptions, Design, percentage change from baseline, Statistics, Treatment Effect | Leave a comment

18.1 Percentage Change – Right Way and a Wrong Way

Eat s**t, 300 trillion flies can’t be wrong. [old joke punchline] “No, I dropped them in that dark alley, but I’d never find them there.  That’s why we’re looking under the light post.” *** I came across a recent rant … Continue reading

Posted in Effect Size, percentage change from baseline | 4 Comments