RecruitingClinical trialModifying the Inpatient Environment to Reduce Delirium in Older AdultsThe overall goal is to reduce the incidence and burden of delirium, as measured by the delirium burden index (DBI) among hospitalized older adults (≥70 years), by modifying the inpatient environment to decrease its sleep antagonism. The investigators propose to implement a multi-modal sleep hygiene (MMSH) bundle, an enhancement of a previously reported sleep-focused intervention which had 88 - 100% compliance for intervention components, and reduced ICU delirium by 50%.