ArticleThe journal of climate change and health
Development of a methodology for carbon efficiency in a healthcare system.
Article in The journal of climate change and health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Introduction: Healthcare systems worldwide contribute significantly to global carbon emissions whilst facing increasing workloads from ageing populations. This creates a challenge of delivering more care while reducing environmental impact. This paper describes the development of a methodology to measure carbon efficiency in healthcare by relating carbon footprint to workload across different care settings. Case presentation: The National University Health System (NUHS) in Singapore developed a workload unit (WLU) methodology to quantify carbon efficiency. Carbon footprints per unit of care were calculated across six care settings, establishing carbon relativity ratios. A polyclinic appointment was assigned one WLU, whilst an acute hospital inpatient day equated to 14.7 WLU based on relative carbon intensity. Total system workload was summated using WLUs, enabling calculation of carbon efficiency as kg CO Discussion: The methodology revealed improving carbon efficiency despite increasing absolute emissions from 2020-2023. Carbon per WLU decreased from 16.85 to 16.17 kg CO Conclusion: This methodology enables healthcare systems to monitor environmental sustainability progress while accounting for workload changes, supporting data-driven decarbonization efforts and benchmarking between institutions delivering different care portfolios.
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