Variability measures for clinical trials at baseline and at the end of study

Data from 208 parallel clinical trials with quantitative outcome published in years 2004, 2007, 2010 and 2013. The main collected variables are: title; link to PubMed abstract; type of outcome (measured or scored); type of intervention (pharmacological or not); type of measure (automatic or assessed); if the main endpoint was significant; the standard deviations of the main outcome in both arms at the baseline and at the end of the study.