Fig. 4

Estimated incidence rate ratios (IRR) with corresponding 95% confidence intervals (CI) between the CHAMPS-group and the two control groups (ref). Separate multivariable Poisson models are fitted for the four outcomes: contacts with physiotherapist, chiropractor, or General Practitioners and total number of contacts. Adjustment factors were children’s gender, parent’s healthcare^a usage in the period before CHAMPS, and the equivalised disposable family income^b