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. 2024 Feb;12(2):e235-e242.
doi: 10.1016/S2214-109X(23)00538-7.

Routine sterile glove and instrument change at the time of abdominal wound closure to prevent surgical site infection (ChEETAh): a model-based cost-effectiveness analysis of a pragmatic, cluster-randomised trial in seven low-income and middle-income countries

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Routine sterile glove and instrument change at the time of abdominal wound closure to prevent surgical site infection (ChEETAh): a model-based cost-effectiveness analysis of a pragmatic, cluster-randomised trial in seven low-income and middle-income countries

NIHR Global Health Research Unit on Global Surgery. Lancet Glob Health. 2024 Feb.
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Abstract

Background: Surgical site infection (SSI) is a major burden on patients and health systems. This study assessed the cost-effectiveness of routine change of sterile gloves and instruments before abdominal wall closure to prevent SSI.

Methods: A decision-analytic model was built to estimate average costs and outcomes of changing gloves and instruments before abdominal wall closure compared with current practice. Clinical data were obtained from the ChEETAh trial, a multicentre, cluster-randomised trial in seven low-income and middle-income countries (LMICs), and costs were obtained from a study (KIWI) that assessed costs associated with SSIs in LMICs. Outcomes were measured as the percentage of surgeries resulting in SSIs. Costs were measured from a health-care provider perspective and were reported in 2021 US$. The economic analysis used a partially split single-country costing approach, with pooled outcomes data from all seven countries in the ChEETAh trial, and data for resource use and unit costs from India (KIWI); secondary analyses used resource use and costs from Mexico and Ghana (KIWI).

Findings: In the base case, the average cost of the intervention was $259∙92 compared with $261∙10 for current practice (cost difference -$1∙18, 95% CI -4∙08 to 1∙33). In the intervention group, an estimated 17∙6% of patients had an SSI compared with 19∙7% of patients in the current practice group (absolute risk reduction 2∙10%, 95% CI 2∙07-2∙84). At all cost-effectiveness thresholds assumed ($0 to $14 000), the intervention had a higher likelihood of being cost-effective compared with current practice, indicating that the intervention was cost-effective. Similar results were obtained when the analysis using data from India was repeated using resource use and unit cost data from Mexico and Ghana.

Interpretation: Routine sterile glove and instrument change before abdominal wall closure is effective and the costs are similar to those for current practice. Routine change of gloves and instruments before abdominal wall closure should be rolled out in LMICs.

Funding: National Institute for Health and Care Research (NIHR) Clinician Scientist Award, NIHR Global Health Research Unit Grant, and Mölnlycke Healthcare.

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Conflict of interest statement

Declaration of interests RO obtained a grant from the Institute of Global Innovation aimed at estimating the economic burden of antmicrobial resistance in Ghana. DGM received funding from the NIHR Global Health, participates in the University College London lung/gynae Trial Steering Committee, and is the Chair for Global Reach Committee European Society of Coloproctology. All other authors declare no competing interests.

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