Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12874-021-01307-9/MediaObjects/12874_2021_1307_Fig4_HTML.png)
Toward a definition of the minimal perceived change as a statistical parameter in the population. a: The measurement of perceived change by a patient global rating of change. b: Defining the value of the minimal perceived change
Toward a definition of the minimal perceived change as a statistical parameter in the population. a: The measurement of perceived change by a patient global rating of change. b: Defining the value of the minimal perceived change