ArticleInfection prevention in practice2025
Impact of a nudge-based intervention on hand soap usage in a Japanese Hospital: interrupted time series analysis.
Article in Infection prevention in practice, 2025. 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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7 authors.
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Abstract
Background: This study aimed to evaluate the effectiveness of nudge-based messages on hand soap usage in a Japanese hospital setting. Methods: Interrupted time series analysis was conducted using monthly hand soap usage data from April 2022 to March 2024. The following nudge messages were placed in restrooms: "Are your neighbors washing their hands with soap?" (men) and "Water does not disinfect; soap works!" (women). A generalized least squares model with harmonic terms was used to analyze the data, accounting for seasonality and autocorrelation. Results: The intervention was associated with an immediate increase of 147.85 units/month in hand soap usage (95% confidence interval [CI]: 61.87-233.83; Conclusions: These findings suggest that nudge-based interventions can be effective in promoting hand hygiene in Japanese health-care settings, but the effect may wane over time.
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