Table 4 Results from the logistic regression considering the variables that impact the PED’s management as independent variables and “avoidable visit” as the dependent variable, the reference is “not avoidable” (the results are presented in odds ratio, confidence interval and p-value). These results are adjusted for all front door variables and age*triage level interaction

Triage level

3

—

—

—

—

2

0.27

0.24, 0.31

< 0.001

0.60

0.36, 0.96

0.042

4

2.67

2.56, 2.78

< 0.001

2.45

2.04, 2.95

< 0.001

5

5.95

5.39, 6.57

< 0.001

2.87

2.15, 3.82

< 0.001

Discharge physician’s speciality

Paediatrics

—

—

—

—

Orthopaedics

0.10

0.09, 0.10

< 0.001

0.20

0.18, 0.23

< 0.001

Paediatric surgery

1.52

1.49, 1.55

< 0.001

2.82

2.63, 3.03

< 0.001

Ophthalmology

28.3

26.1, 30.8

< 0.001

37.9

28.7, 51.2

< 0.001

Otolaryngology

4.10

3.93, 4.28

< 0.001

7.02

6.00, 8.23

< 0.001

Stomatology

6.71

6.18, 7.30

< 0.001

6.63

5.06, 8.75

< 0.001

Immunoallergology

1.36

1.21, 1.53

< 0.001

2.02

0.82, 4.78

0.11

Obstetrics

1.94

1.68, 2.25

< 0.001

1.98

1.30, 3.00

0.001

Plastic and Reconstructive surgery

0.89

0.76, 1.04

0.16

0.00

0.90

Other

0.98

0.92, 1.05

0.60

1.24

1.03, 1.47

0.019

Returns within 72 h

Yes

—

—

—

—

No

1.11

1.08, 1.15

< 0.001

1.04

0.92, 1.18

0.53

Age (years) * triage.level

[0...2] * 2

0.58

0.50, 0.67

< 0.001

0.77

0.45, 1.36

0.35

[3...5] * 2

0.71

0.60, 0.84

< 0.001

0.28

0.13, 0.57

< 0.001

[9...11] * 2

1.38

1.13, 1.68

0.001

0.76

0.36, 1.60

0.47

[12...14] * 2

1.69

1.40, 2.04

< 0.001

0.79

0.39, 1.59

0.52

[15...17] * 2

1.67

1.41, 1.98

< 0.001

1.03

0.56, 1.90

0.93

[0...2] * 4

1.09

1.04, 1.15

< 0.001

1.48

1.20, 1.82

< 0.001

[3...5] * 4

0.93

0.88, 0.98

0.004

0.72

0.57, 0.91

0.006

[9...11] * 4

1.02

0.96, 1.09

0.45

0.98

0.76, 1.26

0.85

[12...14] * 4

1.02

0.95, 1.08

0.63

1.14

0.88, 1.48

0.32

[15...17] * 4

0.89

0.84, 0.95

< 0.001

0.94

0.74, 1.20

0.64

[0...2] * 5

0.62

0.55, 0.70

< 0.001

0.83

0.60, 1.17

0.29

[3...5] * 5

0.79

0.69, 0.91

< 0.001

0.90

0.61, 1.32

0.58

[9...11] * 5

1.12

0.98, 1.29

0.11

1.15

0.77, 1.73

0.49

[12...14] * 5

1.10

0.95, 1.26

0.19

1.27

0.85, 1.88

0.24

[15...17] * 5

0.94

0.82, 1.07

0.37

0.94

0.65, 1.36

0.74