A combination of genetic susceptibility and environmental exposure is thought to cause inflammatory bowel disease (IBD), but the non-genetic component remains poorly characterized. We therefore undertook a search for environmental variables and gene-environment interactions associated with future IBD diagnosis in a large UK cohort. Using self-report and electronic health records, we identified 1946 Crohn’s disease (CD) and 3715 ulcerative colitis (UC) patients after quality control in the UK Biobank. Based on prior literature and biological plausibility , we tested 38 candidate environmental variables for association with CD, UC, and overall IBD using Cox proportional hazard regressions. We also tested whether these variables interacted with polygenic risk in predicting disease, following up significant (FDR < 0.05) results with tests for SNP-environment associations. We performed robustness analyses on all significant results. As in previous reports, appendectomy protected against UC, smoking (both current and previous) elevated risk for CD, current smoking protected against UC, and previous smoking imparted a risk for UC. Childhood antibiotic use associated with IBD, as did sun exposure during the winter. Socioeconomic deprivation was conferred a risk for IBD, CD, and UC. We uncovered negative interactions between polygenic risk and previous oral contraceptive use for IBD and UC. Polygenic risk also interacted negatively with previous smoking in predicting UC. There were no individually significant SNP-environment interactions. Thus, for a limited set of environmental variables, there was strong evidence of association with IBD diagnosis in the UK Biobank, and interaction with polygenic risk was minimal.

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Summary: As value-based care gains traction in response to towering health care expenditures and issues of health care inequity, hospital capacity, and labor shortages, it is important to consider how a value-based approach can be achieved in plastic surgery. Value is defined as outcomes divided by costs across entire cycles of care. Drawing on previous studies and policies, this article identifies key opportunities in plastic surgery to move the levers of costs and outcomes to deliver higher value care. Specifically, outcomes in plastic surgery should include conventional measures of complication rates and patient-reported outcome measures to drive quality improvement and benchmark payments. Meanwhile, cost reduction in plastic surgery can be achieved through value-based payment reform, efficient workflows, evidence-based and cost-conscious selection of medical devices, and greater use of outpatient surgical facilities. Lastly, the authors discuss how the diminished presence of third-party payers in aesthetic surgery exemplifies the cost-conscious and patient-centered nature of value-based plastic surgery. To lead in future health policy and care delivery reform, plastic surgeons should strive for high-value care, remain open to new ways of care delivery, and understand how plastic surgery fits into overall health care delivery.

Teaching and Learning MomentsAuthor's Note: The name and identifying information in this essay have been changed to protect the identity of the individual described.