Table 1.

Eligibility criteria.

Criterion	Inclusion criteria	Exclusion criteria
Study type	All types of original research published in peer-reviewed journals and conferences	Letters, comments, editorials, conference abstracts, or any type of review
Period	January 1, 2015 until January 6 (Scopus) and 13 (Embase) 2020	Before January 1, 2015 and after January 6 (Scopus), 2020 and January 13 (Embase), 2020
Language	English	All other languages
Population	In-hospital patients in all age groups	Patients who are not in-hospital patients, healthy participants
Intervention	Nonpharmacological interventions using any type of technology either as a single intervention or as a part of multicomponent intervention aiming at preventing or reducing delirium	Pharmacological interventions, interventions only focusing on detecting/screening delirium
Comparator	Any comparator, including no comparator	N/Aa
Outcome	Delirium-related data (eg, occurrence, duration of delirium) or risk factor–related data that indirectly influence delirium (eg, anxiety)	Neither delirium-related data nor risk factor–related data

^aN/A: not applicable.