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Background  We undertook a survey of all bariatric centres in Scotland in order to describe current pre- and post-operative care, to estimate their costs and explore differences in financial impact.    Methods  A questionnaire was distributed to each health centre. Descriptive statistics were used to present average cost per patient along with 95% confidence intervals, and the range of costs.    Results  Results show nearly a five-fold difference in costs per patient for pre-operative services (range £226 - £1071) and more than a three-fold difference for post-operative services (range £259 - £896).    Conclusions  There is a lack of evidence base and a clear requirement for the evaluation of bariatric surgical services to identify the care pathways pre- and post-surgery which lead to largest improvements in health outcomes and remain cost-effective.    Electronic supplementary material  The online version of this article (10.1186/s40608-018-0223-3) contains supplementary material, which is available to authorized users.

Variations in bariatric surgical care pathways: a national costing study on the variability of services and impact on costs