Adverse events in critical care: Search and active detection through the Trigger Tool

Table 3 Comparison between the different studies in ICU using the Trigger Tool methodology

Ref.	Patients	No. of ICUs	Sample	Incidence or prevalence of AEs
Resar et al[2]	During ICU stay	62	12074	11.3/100 patient d
Nilsson et al[12]	Those who die in less than 96 h of ICU admission	1	128	32/100 ICU admissions 19.5%
PREVENT[13]	Within 7 d prior to ICU admission	5	280	27.1% (80% related to reason for admission)
UPB (Molina et al)	During ICU stay	1	94	52.1% 3.6 AEs per patient

AEs: Adverse events; ICU: Intensive care unit.