OP14.05: Deep endometriosis transvaginal ultrasound in the work‐up of patients with signs and symptoms of endometriosis: a cost analysis

Deep endometriosis transvaginal ultrasound (DE TVS) is accurate in the detection of ovarian and DE; however, realisation of its full potential and utilisation remains variable. As such, patients may require a two-step approach (diagnostic followed by therapeutic laparoscopy) or laparoscopy by a surgeon who is unaware of disease extent and may not have the appropriate skill level. We believe the economic impact of a two-step approach on the healthcare system is significant. We aim to compare the economic costs of two diagnostic models of care of patients with potential endometriosis. The conventional model (M1) includes the basic pelvic ultrasound and diagnostic laparoscopy. The novel model (M2) includes the DE TVS. Estimates for endometriosis prevalence and severity were drawn from local Australian hospital data. The study utilised a hypothetical population of 1000 patients visiting a public gynecology clinic for signs and symptoms of endometriosis. A Markov model (figure 1) with a 12-month time horizon was built to estimate the change to government, health service and patient costs with the adoption of the DE TVS compared to standard diagnostic methods. Probabilistic sensitivity analysis was conducted to capture the uncertainty in the information used to populate the models. The total annual cost of novel model (M2) is $12,547,724.03AUD (£6,826,673.63GBP), cheaper than the conventional model (M1), which cost $13,472,161.67AUD (£7,329,620.15GBP). Supporting information can be found in the online version of this abstract Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.