Is reminder signage at point-of-use to promote handwashing for hospital healthcare workers effective? The conclusion is No. Setting acute care hospitals in the US Target audience all healthcare workers Number of units involved 58 in-patient units in 9 hospitals Method cluster-randomized clinical trial; units were randomly assigned to (1) no change; (2) weekly change; and (3) monthly change. Intervention reminder signs were placed next to Alcohol-based dispensers Assessment covert observation at entry and exit points to patients’ rooms Conclusion no statistically significant effect Interpretation Nudging by changing signs did not influence hand hygiene practices. Journal reference October 23, 2019. doi:10.1001/jamanetworkopen.2019.13823…