Table 2

Adverse event (AE) risk and rate

Patients observed141
Days of observation, total703
Days of surveillance per patient, median (IQR)4 (2 to 7)
Patients with at least one trigger detected73 (52%)
Number of triggers detected per patient, median (IQR)1 (0 to 2)
Number of AEs22
 Preventable AEs15
Number of potential AEs41
Number of additional errors/cases with substandard care30
Event risk, n (%)
 Patients with at least one AE17 (12%)
  Preventable AE14 (10%)
 Patients with at least one potential AE32 (23%)
Event rate
 AE rate31 per 1000 patient days
  Preventable AE rate21 per 1000 patient days
 Potential AE rate58 per 1000 patient days