Table 2 First regression analysis of all variables

Age range (Reference: < 25 years)

25–60

.051

1.052

.834

0.65–1.69

 > 60

.356

1.427

.309

0.72–2.83

Patient known (pretreated at the hospital) (Reference: no)

Missing

− 17.609

.000

1

1.75–3.76

Yes

.942

2.566

.000

Sex (Reference: female)

Male

.181

1.198

.322

0.84–1.71

Weekday (Reference: Sunday)

Monday

.105

1.111

.744

0.59–2.09

Tuesday

.230

1.258

.471

0.67–2.35

Wednesday

.456

1.578

.164

0.83–3.00

Thursday

− .107

.899

.751

0.47–1.73

Friday

− .304

.738

.362

0.38–1.42

Saturday

− .169

.844

.625

0.43–1.67

Time of arrival (Reference: 0:00–3:49)

04:00–7:59

− .499

.607

.300

0.24–1.56

08:00–11:59

− .408

.665

.258

0.33–1.35

12:00–15:59

− .147

.863

.675

0.43–1.72

16:00–19:59

− .167

.846

.643

0.42–1.71

20:00–23:59

.157

1.170

.883

0.58–2.38

Legal status (Reference: voluntary)

Involuntary by psychkg

3.433

30.962

.000

7.96–120.37

Involuntary by BtG

3.417

30.469

.000

4.49–206.78

Missing

3.659

38.839

.091

0.56–2712.94

Referral to hospital (Reference: no)

Yes by general physician

1.452

4.271

.001

1.87–9.74

Yes by emergency physician

− 2.110

.121

.000

0.05–0.31

Missing

− 1.733

.177

.105

0.02–1.44

Mode of transportation (Reference: by foot)

Ambulance

− .418

.658

.065

0.42–1.03

Police

.670

1.955

.215

0.68–5.64

Others

− .760

.468

.624

0.02–9.74

Missing

− 2.158

.116

.029

0.02–0.80

Psychiatric emergency according to the German guideline. (Reference: no)

Yes

1.048

2.851

.000

1.94–4.20

Missing

− 1.291

.275

.517

0.01–13.58

Diagnosis according to ICD-10 F0 (Reference: no)

Yes

− .782

.458

.377

0.08–2.59

Missing

− 22.851

.000

.998

0

Diagnosis according to ICD-10 F1 (Reference: no)

Yes

− 2.252

.105

.001

0.03–0.39

Missing

Diagnosis according to ICD-10 F2 (Reference: no)

Yes

− 1.785

.168

.044

0.04–0.64

Missing

Diagnosis according to ICD-10 F3 (Reference: no)

Yes

− 2.381

.092

.000

0.02–0.35

Missing

Diagnosis according to ICD-10 F4 (Reference: no)

Yes

− 3.817

.022

.000

0.01–0.09

Missing

Diagnosis according to ICD-10 F5 (Reference: no)

Yes

− 4.128

.016

.009

0.00–0.36

Missing

Diagnosis according to ICD-10 F6 (Reference: no)

Yes

− 1.320

.267

.066

0.07–1.09

Missing

Diagnosis according to ICD-10 F7 (Reference: no)

Yes

− 1.710

.181

.219

0.01–2.76

Missing

Suicide attempt X84 (Reference: no)

Yes

21.075

 > 1 Mrd

.998

0

Missing

31.730

 > 1 Mrd

.999

0

Intoxication according to ICD-10 T36–T50 (Reference: no)

Yes

1.634

5.125

.170

0.50–52.89

Missing

− 34.218

.000

.999

0

Internal additional diagnosis (Reference: no)

Yes

− 2.484

.083

.000

0.04–0.20

Missing

− 11.734

.000

.999

0

Neurological additional diagnosis (Reference: no)

Yes

− .182

.834

.757

0.26–2.64

Missing

Surgical additional diagnosis (Reference: no)

Yes

− .047

.954

.925

0.36–2.56

Missing

Psychopharmaca administered at ER (Reference: no)

Yes

.376

1.457

.784

0.09–21.60

Missing

15.371

 > 4 Mio

.999

0

Benzodiazepine administered at ER (Reference: no)

Yes

− .628

.534

.558

0.07–4.36

Missing

High potency antipsychotics administered at ER (Reference: no)

Yes

18.374

 > 9 Mrd

.999

0

Missing

Low potency. antipsychotica administered at ER (Reference: no)

Yes

− .989

.372

.460

0.03–5.14

Missing

Antidepressiva administered at ER (Reference: no)

Yes

− 49.524

.000

.999

0

Missing

Internal medications administered at ER (Reference: no)

Yes

− 1.354

.258

.189

0.03–1.95

Missing

Other medications administered at ER (Reference: no)

Yes

1.345

3.840

.283

0.33–44.83

Missing

ECG at ER (Reference: no)

Yes

1.382

3.982

.000

2.47–6.41

Missing

Laboratory at ER (Reference: no)

Yes

2.789

16.262

.000

9.93–26.64

Missing

Radiological examination at ER (Reference: no)

Yes

− .191

.826

.664

0.35–1.96

Missing