The figure shows line graphs of symptom score against time for two groups labeled "Borage" and "Placebo". There are five time points. At each there are vertical bars showing the interval estimates for each group, one standard error either side of the point. Times are 0, 2, 4, 8, and 12 weeks. Both lines fall slightly over time. The line for "Borage" rises between 8 and 12 weeks, though not to the 0 weeks level, otherwise the falls in score are steady. There is little difference between the two groups.

Back to Regression towards the mean.

This page maintained by Martin Bland.

Last updated: 19 January, 2004.