Table 1.

Variables of the algorithm development and validation study.

Variable	Description	Development: Method as data source	Validation: Method as data source
Age	Years at the time of admission	Global Trigger Tool	LPZ/ANQa measure
Gender	Female or male sex	Global Trigger Tool	LPZ/ANQ measure
Length of stay	Number of days in the hospital	Global Trigger Tool	Manual chart review
Primary diagnose	Cardiac, musculoskeletal, endocrinologic, gastrointestinal, pulmonary, infectious, neurological, psychiatric, cancer, dementia	Global Trigger Tool	LPZ/ANQ measure
Presence of fall	Yes or no	Algorithm, Global Trigger Tool, voluntary incident reports	Algorithm, manual chart review, LPZ/ANQ-measure
Fall rates	Number of falls	Algorithm, Global Trigger Tool, voluntary incident reports	Algorithm, manual chart review, LPZ/ANQ measure
Time for data collection	Time for data collection in hours	Global Trigger Tool	Manual chart review

^aLPZ/ANQ: Landelijke Prevalentiemeting Zorgproblemen/Swiss National Association For Quality Development in Hospitals and Clinics.