Although we were able to identify thirty economic evaluations in total, a paucity of material is apparent in this field, especially if we compare the modest number of economic findings with the larger number of clinical evaluations. We have found some papers aiming to evaluate the clinical and cost-effectiveness of evidence-based BPD treatment [58–60]. However, since these papers only outline the background and methods of randomised controlled trials and are still ongoing, these studies may inform future reviews.