Fig. 4From: A pain relieving reimbursement program? Effects of a value-based reimbursement program on patient reported outcome measuresThe mean monthly ODI level of surgically treated patients. The mean monthly ODI level at baseline, 1-year follow up and the difference between follow-up and baseline (Δ-score, i.e. the change after surgery) among patients surgically treated 2006–2015. The vertical line indicates the introduction of the STHLM-VBRP at the end of 2013Back to article page