Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12998-016-0090-2/MediaObjects/12998_2016_90_Fig1_HTML.gif)
Changes in psychological factors during the first three months of a first neck pain episode. The figure shows the development of anxiety, depression, fear avoidance and pain locus of control during the first three months of a first episode of acute neck pain (mean ± standard deviation). * p ≤ 0.05. ** p ≤ 0.01. *** p ≤ 0.001