Fig. 2
From: How can latent trajectories of back pain be translated into defined subgroups?
Mean LBP intensity in eight previously identified latent LBP trajectory patterns. In order to initially describe general patterns of LBP in relatively stable trajectory periods, the measures from the first 9 weeks after initiating treatment (grey area) were not included in this study. Bars indicate +½ standard deviation, which were used to enhance the readability by avoiding overlap of graphs