In this cluster-crossover randomized clinical trial that involved 1,685 patients in the intensive care unit (ICU), the incidence of delirium was 18.9% in the flexible family visitation group compared with 20.1% in the standard restricted visitation group, a difference that was not statistically significant.

Cluster-crossover randomized clinical trial involving patients, family members, and clinicians from 36 adult ICUs with restricted visiting hours in Brazil. Participants were recruited from April 2017 to June 2018, with follow-up until July 2018.

Among 1,685 patients, 1,295 family members, and 826 clinicians enrolled, 1685 patients, 1,060 family members, and 737 clinicians completed the trial.

Among patients in the ICU, a flexible family visitation policy, vs standard restricted visiting hours, did not significantly reduce the incidence of delirium.

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