Clinical Utility Evidence for TissueCypher®

Change in the overall and the diagnostic and treatment evidence-based quality scores in the CPV patient simulations: difference-in-differences regression analysis between the control and the intervention groups' diagnosis and treatment of risk progression in patients with Barrett's esophagus, as measured by the participants diagnostic and treatment CPV case domain scores. In each domain of a CPV (history, physical exam, workup, diagnosis and treatment), participants' care recommendations are evaluated against evidence-based care scoring criteria which can sum from 0 to a high potential score of up to 100 percent in each domain, where higher scores mean better outcomes.

Evidence-based management decisions based on patient's TissueCypher® test result: Once the intervention group is exposed to the intervention, education materials on the TissueCypher (a validated diagnostic test for predicting risk progression of BE patients), the scores are measured, on a scale of 0% to 100% from round 1 (pre-exposure) to round 2 (post-exposure) and observe how the evidence-based TissueCypher results influence physicians' management decisions.

Change in cost of BE-related care. (This cost is modeled in part by measuring differential rates of endoscopic work up/interventions/levels of care selected by each arm, and multiplying by average Medicare reimbursement rates for these workups/interventions/levels of care. The cost is also modeled by examining average per annum costs for patients suffering from BE, and multiplying by the percent of patients whose workup or therapeutic management is significantly reduced following the intervention.)

Participants completing the simulated cases, or CPVs, receive scores, on a scale from 0% to 100%, based upon the quality of care they provide. This measure will assess the baseline levels of variation in the care of pain patients among all participants, including by use case types. Baseline levels of variation will be measured in the surveillance, management and treatment of patients with Barrett's esophagus among all participants

Difference in the overall, and the diagnostic and treatment quality scores between control and intervention participants. Diagnostic and treatment scores are calculated as the percent correct on CPVs, and the overall score is an average score of the subcategory scores (percent correct). The score is reported on a scale from 0% to 100%. This will be examined for each of the use cases to determine in which case(s) CPV scores most improved.