Fig. 5

Estimated treatment effects (difference in mean change) at two selected values of each of the six preselected baseline variables. The estimates are based on a model that assumed a linear change in the treatment effect in dependence on the values. Negative estimates indicate an advantage for chiropractic treatment. Interactions refer to the difference in treatment effects between the two selected values. Negative interactions indicate a more distinct advantage of chiropractic care in case of large values. The selected values refer to the 10th and 90th percentile of each variable