Table 2 Odds ratios (ORs) and 95% confidence intervals (CIs) for prolonged on-scene time (OST): Results of univariable and multivariable logistic regression analyses

Age

 Infants

0.47

0.35

0.63

0.54

0.40

0.71

 Adolescents

0.73

0.55

0.97

0.79

0.53

1.27

 Adults

Ref

Ref

 Older people

0.96

0.86

1.09

1.18

1.01

1.36

Sex

 Male

Ref

Ref

 Female

1.06

0.94

1.18

1.12

1.08

1.18

Accident type

 Acute illnesses

Ref

Ref

 Fire accidents

5.89

3.25

10.67

7.77

3.83

15.79

 Natural disasters

16.50

5.77

47.15

28.52

2.09

389.76

 Motor vehicle accidents

1.39

1.20

1.60

1.63

1.30

2.06

 Work-related accidents

1.12

0.62

2.03

1.51

0.78

2.96

 Sports-related accidents

0.22

0.06

0.91

0.20

0.04

0.94

 Other types of accidents

0.92

0.78

1.08

0.92

0.79

1.07

 Assaults

2.74

1.52

4.97

2.91

1.86

4.53

 Self-injuries

6.49

4.02

10.47

5.60

3.37

9.32

 Others

2.75

0.33

22.87

3.17

0.26

38.71

Dates and times of the ambulance calls

 Weekday daytime (9–16)

Ref

Ref

 Weekday early night (17–0)

1.00

0.85

1.16

1.01

0.82

1.25

 Weekday late night (1–8)

0.95

0.80

1.14

0.96

0.63

1.47

 Weekend daytime (9–16)

0.73

0.59

0.89

0.71

0.44

1.14

 Weekend early night (17–0)

0.70

0.56

0.87

0.68

0.54

0.85

 Weekend late night (1–8)

1.02

0.80

1.30

1.00

0.79

1.27

Number of hospital inquiries

 < 4

Ref

Ref

 ≥ 4

68.40

48.66

96.15

77.34

53.55

111.69

COVID-19 pandemic period

 Pre-pandemic period (1/2016–-3/2020)

Ref

Ref

 Pandemic period (4/2020–-12/2020)

1.90

1.70

2.14

2.01

1.62

2.50