https://www.selleckchem.com/ e, 1.27 ng/mL; 95% CI, -0.70 to 3.24 ng/mL; P = .21). There were no significant differences between the 2 groups regarding the rates of adverse events (46 [20.9%] vs 45 [20.5%]; difference, 0.4%; 95% CI, -6.7% to 8.5%; P = .82). No patient withdrew because of adverse events. Among patients with IDA, oral iron supplements alone were equivalent to oral iron supplements plus vitamin C in improving hemoglobin recovery and iron absorption. These findings suggest that on-demand vitamin C supplements are not essential to take along with oral iron supplements for patients with IDA. ClinicalTrials.gov Identifier NCT02631668. ClinicalTrials.gov Identifier NCT02631668. Hospitals ceased most elective procedures during the height of coronavirus disease 2019 (COVID-19) infections. As hospitals begin to recommence elective procedures, it is necessary to have a means to assess how resource intensive a given case may be. To evaluate the development and performance of a clinical decision support tool to inform resource utilization for elective procedures. In this prognostic study, predictive modeling was used on retrospective electronic health records data from a large academic health system comprising 1 tertiary care hospital and 2 community hospitals of patients undergoing scheduled elective procedures from January 1, 2017, to March 1, 2020. Electronic health records data on case type, patient demographic characteristics, service utilization history, comorbidities, and medications were and abstracted and analyzed. Data were analyzed from April to June 2020. Predicitons of hospital length of stay, intensive care unit length of stay, need for mechanical ventilation, and nese scheduling. This work shows the importance of a learning health care environment in surgical care, using quantitative modeling to guide decision-making. The clinical decision support tool is currently being used by surgical leadership to inform case scheduling. This work shows the imp