Table 1 (A) Baseline characteristics of included patients, (B) door-to-ECG time in included patients in general, in patients referred via emergency doctors, ambulance services and self-referral respectively

(A)

Age in years

60

(46–74)

74

(65–82)

< 0.001^a

Grace score

93

(62–125)

125

(104–147)

< 0.001^a

Creatinin in mg/dl

0.9

(0.8–1.1)

1.1

(0.9–1.4)

< 0.001^a

Female in % (N)

45.7

(338)

31.2

(113)

< 0.001^b

Pre hospital ECG in % (N)

20.7

(153)

31.8

(115)

< 0.001^b

Diabetes mellitus in % (N)

13.7

(101)

27.9

(101)

< .0001^b

Arterial hypertension % (N)

44.1

(326)

79.6

(288)

< 0.001^b

Chronic kidney failure % (N)

5.1

(38)

25.7

(93)

< 0.0001^b

Positive family history for CV events in % (N)

13

96

18.2

(66)

0.02^b

Hyperlipidaemia in % (N)

12.7

94

51.4

(186)

< 0.001^b

History of smoking in % (N)

23.7

175

20.2

(73)

0.2^b

TIMI score

2

(2–3)

1

(0–2)

< 0.0001^a

Peripheral artery disease in % (N)

2

(16)

14

(49)

< 0.0001^b

Emergency admission^c in % (N)

49

(362)

66

(238)

< 0.001^b

Self referral in % (N)

30

(223)

15

(56)

< 0.001^b

Time point of admission

 Morning shift in % (N)

42

(308)

48

(175)

0.04^b

 Night shift in % (N)

20

(150)

18

(65)

0.4^b

 Late shift (in % (N)

38

(281)

34

(122)

0.2^b

(B)

Time-to-EKG in minutes

22

(14–37)

20

(13–30)

< 0.001^a

Via emergency doctor time-to-EKG in minutes

2

(0–15)

16

(12–23)

< 0.001^a

Via ambulance service time-to-EKG in minutes

20

(12–35)

19

(14–25)

< 0.001^a

Self-referral time-to-EKG in minutes

32

(20–51)

30

(16–49)

0.5^a

Total time in CPU in hours

6.4

(5–11)

7.5

(5–10)

< .0001^a

First symptoms to admission in hours

12

(5–18)

0.8

(0.6–11)

< 0.001^a