Table 3

 Factors associated with preventable adverse events in patients discharged from the emergency department

CharacteristicPreventable AENo preventable AEp Value
AE, adverse event; CTAS, Canadian Triage and Acuity Score.
*The location within the emergency department from where the patient was discharged. Patients in the cubicles, observation and resuscitation areas are cared for in no bed, a bed and a monitored bed, respectively.
n17382
Median age, years (IQR)60 (49–72)48 (35–67)0.06
Gender (male)8 (47%)193 (51%)0.80
CTAS0.60
    Non-urgent0 (0%)10 (3%)
    Less urgent2 (12%)49 (13%)
    Urgent10 (59%)239 (63%)
    Emergent4 (24%)77 (20%)
    Resuscitation1 (6%)7 (2%)
ED care area*0.29
    Cubicles2 (12%)106 (28%)
    Observation7 (41%)140 (37%)
    Resuscitation8 (48%)136 (36%)
Median ED length of stay (hours:minutes) (IQR)4:44 (3:16–6:44)4:09 (2:51–6:06)0.36
Acute diagnosis (top five)
    Chest pain5 (29%)69 (18%)
    Bone and joint disorders1 (6%)54 (14%)
    Genitourinary (infection/stones/other)1 (6%)27 (7%)
    Atrial fibrillation1 (6%)17 (4%)
    Abdominal pain (cause unspecified)1 (6%)16 (4%)
Number of chronic illnesses0.82
    05 (29%)146 (38%)
    18 (47%)121 (32%)
    23 (18%)70 (18%)
    31 (6%)32 (8%)
    ⩾40 (0%)13 (3%)