A pre-pandemic COVID-19 assessment of the costs of prevention and control interventions for healthcare associated infections in medical and surgical units in Québec

Abstract

Background Healthcare-associated infections (HCAIs) present a major public health problem that significantly affects patients, health care providers and the entire healthcare system. Infection prevention and control programs limit HCAIs and are an indispensable component of patient and healthcare worker safety. The clinical best practices (CBPs) of handwashing, screening, hygiene and sanitation of surfaces and equipment, and basic and additional precautions are keystones of infection prevention and control (IPC). Systematic reviews of IPC economic evaluations report the lack of rigorous empirical evidence demonstrating the cost-benefit of IPC program in general, and point to the lack of assessment of the value of investing in CBPs more specifically. Objective This study aims to assess overall costs associated with each of the four CBPs. Methods Across two Quebec hospitals, 48 healthcare workers were observed for two hours each shift, for two consecutive weeks. A modified time-driven activity-based costing framework method was used to capture all human resources (time) and materials required (e.g. masks, cloths, disinfectants) for each clinical best practice. Using a hospital perspective with a time horizon of one year, median costs per CBP per hour, as well as the cost per action, were calculated and reported in 2018 Canadian dollars. Sensitivity analyses were performed. Results A total of 1831 actions were recorded. The median cost of hand hygiene (N = 867) was 19.6 cents per action. For cleaning and disinfection of surfaces (N = 102), the cost was 21.4 cents per action, while cleaning of small equipment (N = 85) was 25.3 cents per action. Additional precautions median cost was $4.13 per action. The donning or removing or personal protective equipment (N = 720) cost was 75.9 cents per action. Finally, the total median costs for the five categories of clinical best practiced assessed were 27.2 cents per action. Conclusion The costs of clinical best practices were low, from 20 cents to $4.13 per action. This study provides evidence based arguments with which to support the allocation of resources to infection prevention and control practices that directly affect the safety of patients, healthcare workers and the public. Further research of costing clinical best care practices is warranted.