Table 4 Factors associated with revisiting the ED within 72 h for patients discharged from the ED

Age

1.355 (1.311–1.401)

 < .001

0.99 (0.96–1.00)

Male

1.163 (1.106–1.223)

 < .001

0.99 (0.96–1.00)

Vital sign

 Body temperature

1.043 (1.006–1.081)

0.021

0.66 (0.56–0.75)

 Heart rate

1.225 (1.191–1.260)

 < .001

0.99 (0.96–1.00)

 Respiratory rate

1.023 (0.995–1.052)

0.110

 Oxygen saturation

-

-

 Systolic blood pressure

0.938 (0.904–0.973)

0.001

0.94 (0.87–0.98)

 Diastolic blood pressure

1.004 (0.968–1.041)

0.845

 GCS-E

  1

0.812 (0.257–2.560)

0.722

  2

0.847 (0.406–1.768)

0.659

  3

1.331 (0.893–1.984)

0.160

  4

reference

 GCS-V

  1

0.932 (0.571–1.521)

0.779

  2

1.276 (0.828–1.968)

0.269

  3

1.143 (0.685–1.906)

0.610

  4

0.918 (0.663–1.272)

0.609

  5

reference

 GCS-M

  1

3.103 (1.057–9.107)

0.039

0.50 (0.40–0.60)

  2

2.730 (0.774–9.626)

0.118

  3

1.001 (0.428–2.339)

0.998

  4

0.734 (0.420–1.282)

0.277

  5

0.873 (0.599–1.274)

0.482

  6

reference

 Body weight

-

 -

Comorbidity

 Coronary artery disease

1.059 (0.956–1.172)

0.272

 Malignancy

1.574 (1.470–1.687)

 < .001

0.99 (0.964–1.00)

 Heart failure

1.162 (1.027–1.315)

0.018

0.58 (0.48–0.68)

 COPD

0.943 (0.790–1.125)

0.512

 Stroke

1.198 (1.098–1.306)

 < .001

0.99 (0.946–1.00)

 Dementia

0.890 (0.720–1.100)

0.280

 Diabetes mellitus

1.131 (1.042–1.227)

0.003

0.84 (0.75–0.91)

 End-stage renal disease

1.429 (1.251–1.632)

 < .001

0.99 (0.964–1.00)

 Hypertension

1.174 (1.095–1.259)

 < .001

0.99 (0.964–1.00)

 Liver cirrhosis

1.682 (1.493–1.896)

 < .001

0.99 (0.964–1.00)

 Peptic ulcer disease

1.123 (0.920–1.370)

0.254

 Peripheral vascular disease

1.216 (0.966–1.531)

0.097

 Rheumatic disease

1.177 (1.025–1.351)

0.021

0.60 (0.50–0.70)

Time of presentation

 Month

  1

reference

  2

1.091 (0.969–1.229)

0.148

  3

1.041 (0.923–1.174)

0.515

  4

1.116 (0.990–1.259)

0.073

  5

1.157 (1.027–1.304)

0.016

0.67 (0.57–0.76)

  6

1.239 (1.101–1.393)

 < .001

0.94 (0.87–0.98)

  7

1.112 (0.985–1.255)

0.085

  8

1.192 (1.052–1.350)

0.006

0.72 (0.62–0.81)

  9

1.191 (1.050–1.351)

0.006

0.74 (0.64–0.82)

  10

1.203 (1.064–1.361)

0.003

0.81 (0.72–0.88)

  11

1.156 (1.022–1.307)

0.021

0.68 (0.58–0.77)

  12

1.108 (0.980–1.252)

0.102

 Day of the week

  Sunday

reference

  Monday

1.061 (0.970–1.161)

0.195

  Tuesday

1.044 (0.953–1.144)

0.358

  Wednesday

1.062 (0.966–1.166)

0.213

  Thursday

1.109 (1.011–1.216)

0.028

0.59 (0.49–0.69)

  Friday

1.144 (1.046–1.252)

0.003

0.76 (0.66–0.84)

  Saturday

1.109 (1.016–1.211)

0.021

0.68 (0.58–0.77)

 Time of the day

  00:00–04:00

reference

  04:00–08:00

0.957 (0.861–1.063)

0.409

  08:00–12:00

0.764 (0.697–0.838)

 < .001

0.99 (0.96–1.00)

  12:00–16:00

0.780 (0.712–0.856)

 < .001

0.99 (0.96–1.00)

  16:00–20:00

0.805 (0.735–0.882)

 < .001

0.99 (0.95–1.00)

  20:00–24:00

0.814 (0.744–0.892)

 < .001

0.99 (0.96–1.00)

Triage level

 1

1.666 (0.815–3.408)

0.162

 2

1.057 (0.988–1.132)

0.109

 3

reference

 4

0.966 (0.870–1.072)

0.515

 5

1.262 (1.005–1.584)

0.045

0.47 (0.37–0.57)

Waiting time

1.011 (0.986–1.036)

0.392

Hospital

 Academic

reference

 Community

1.771 (1.566–2.002)

 < .001

0.99 (0.96–1.00)

Complaint

 Non-trauma

reference

 Trauma

0.607 (0.553–0.666)

 < .001

0.99 (0.96–1.00)

Resident independent practice time, minutes

 < 30

reference

 30 to 120

1.034 (0.978–1.093)

0.239

 120 to 210

1.113 (1.025–1.208)

0.011

0.70 (0.65–0.74)

  > 210

1.259 (1.094–1.449)

0.001

0.87 (0.79–0.93)

 Non-recorded

1.042 (0.904–1.201)

0.570