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Table 3 Multivariate logistic regression analyses for prolonged EDLOS

From: Patient and hospital characteristics predict prolonged emergency department length of stay and in-hospital mortality: a nationwide analysis in Korea

 

EDLOS ≥ 6 h

EDLOS ≥ 12 h

aOR

95% CI

aOR

95% CI

Patient variable

 Age ≥ 65 y (vs. < 65 y)

1.16

1.14–1.17

1.09

1.07–1.11

 Female (vs. male)

1.02

1.01–1.03

1.00

0.99–1.02

Insurance type

 National health insurance

1.00

(Reference)

1.00

(Reference)

 Medical aid

1.27

1.25–1.29

1.24

1.21–1.27

 Uninsured or other

0.83

0.81–0.86

0.82

0.79–0.86

 Injury-related presentation (vs. no)

0.64

0.63–0.65

0.69

0.67–0.71

 Arrival via emergency ambulance (vs. other)

1.00

0.99–1.02

0.98

0.96–1.00

 Transferred-in (vs. direct)

0.92

0.91–0.94

1.02

1.00–1.04

Time of presentation

 Day

1.00

(Reference)

1.00

(Reference)

 Evening

1.09

1.07–1.10

3.49

3.43–3.55

 Night

1.49

1.46–1.51

2.69

2.63–2.76

KTAS score

 1

1.00

(Reference)

1.00

(Reference)

 2

0.87

0.85–0.89

0.86

0.84–0.89

 3

1.12

1.10–1.15

1.00

0.97–1.03

 4

1.48

1.44–1.53

1.25

1.20–1.30

 5

1.39

1.30–1.48

1.15

1.06–1.26

 Unidentified

1.01

0.96–1.06

1.00

0.93–1.07

 Artificial ventilation in the ED (vs. no)

0.89

0.87–0.91

0.94

0.91–0.97

CCI score

 0

1.00

(Reference)

1.00

(Reference)

 1

1.37

1.34–1.40

1.29

1.25–1.33

 2

1.30

1.28–1.32

1.25

1.22–1.27

 ≥ 3

1.46

1.43–1.49

1.35

1.32–1.39

Season

 Spring

1.00

(Reference)

1.00

(Reference)

 Summer

0.94

0.92–0.96

0.91

0.89–0.93

 Fall

0.95

0.93–0.96

0.92

0.90–0.94

 Winter

1.05

1.03–1.07

1.10

1.08–1.13

Year

 2017

1.00

(Reference)

1.00

(Reference)

 2018

1.10

1.09–1.12

1.10

1.08–1.12

 2019

1.05

1.03–1.06

1.00

0.98–1.02

Hospital variables

 Hospital staffed beds

 ≥ 1,000

1.00

(Reference)

1.00

(Reference)

 800–999

0.69

0.68–0.70

0.81

0.79–0.83

 600–799

0.63

0.62–0.64

0.72

0.70–0.74

 300–599

0.23

0.23–0.24

0.28

0.28–0.29

 < 300

0.12

0.11–0.12

0.19

0.18–0.20

Level of ED

 Level 1

1.00

(Reference)

1.00

(Reference)

 Level 2

0.93

0.91–0.94

1.02

1.00–1.03

 Level 3

0.53

0.51–0.55

0.62

0.58–0.65

Hospital location

 Metropolitan city

1.00

(Reference)

1.00

(Reference)

 Provincial area

0.94

0.93–0.95

0.91

0.90–0.93

  1. EDLOS Emergency department length of stay, aOR adjusted odds ratio, CI Confidence interval, KTAS Korean triage and acuity scale, ED Emergency department, CCI Charlson comorbidity index