Table 3 Clinical and systemic characteristics

Main diagnosis (ICD-10)

  F0

n = 270

19.8%

n = 47

13.4%

a

0

χ²(6) = 36.983

p < .001

.147

  F1

n = 341

24.9%

n = 66

18.8%

a

  F2

n = 387

28.3%

n = 146

41.5%

b, c

  F3

n = 224

16.4%

n = 56

15.9%

a, b, c

  F4

n = 76

5.6%

n = 11

3.1%

a, c

  F6

n = 49

3.6%

n = 13

3.7%

a, b, c

  Other

n = 20

1.5%

n = 13

3.7%

b

Main or secondary diagnoses (ICD-10)

  F0

n = 296

21.7%

n = 50

14.2%

0

χ²(1) = 9.661

p = .002

.075

  F1

n = 674

49.3%

n = 146

41.5%

0

χ²(1) = 6.875

p = .009

.063

  F2

n = 426

31.2%

n = 164

46.6%

0

χ²(1) = 29.556

p < .001

.131

  F3

n = 308

22.5%

n = 82

23.3%

0

χ²(1) = .093

p = .760

  F4

n = 137

10.0%

n = 27

7.7%

0

χ²(1) = 1.793

p = .181

  F6

n = 180

13.2%

n = 57

16.2%

0

χ²(1) = 2.156

p = .142

  F7

n = 15

1.1%

n = 7

2.0%

0

χ²(1) = 1.760

p = .185

  F9

n = 5

0.4%

n = 6

1.7%

0

χ²(1) = 7.891

p = .005

.068

Dual diagnoses (comorbidities)

  F1 + F2

n = 153

11.2%

n = 50

14.2%

0

χ²(1) = 2.439

p = .118

  F1 + F6

n = 122

8.9%

n = 31

8.8%

0

χ²(1) = .005

p = .945

Suicidal tendencies upon admission

  Yes

n = 559

41.2%

n = 93

26.6%

n = 14

0.8%

χ²(1) = 24.927

p < .001

.121

  No

n = 797

58.8%

n = 256

73.4%

Previously attempted suicide(s)

  Yes

n = 288

29.8%

n = 77

29.8%

n = 496

28.9%

χ²(1) = .000

p = 1

  No

n = 677

70.2%

n = 181

70.2%

Treatment prior to admission

  No previous treatment

n = 572

41.8%

n = 105

29.8%

0

χ²(1) = 16.924

p < .001

.099

  Previous outpatient treatment

n = 407

29.8%

n = 124

35.2%

0

χ²(1) = 3.900

p = .048

.048

  Contact to socio-psychiatric services

n = 41

3.0%

n = 1

0.3%

0

χ²(1) = 8.658

p = .003

.071

  Day-care hospital

n = 187

13.7%

n = 96

27.3%

0

χ²(1) = 37.608

p < .001

.148

Previous psychiatric inpatient treatment(s)

  Yes

n = 855

68.1%

n = 275

82.1%

n = 128

7.4%

χ²(1) = 25.246

p < .001

.126

  No

n = 401

31.9%

n = 60

17.9%

Treating hospital

  Hospital 1

n = 959

70.2%

n = 190

54.0%

a

0

χ²(3) = 92.277

p < .001

.232

  Hospital 2

n = 158

11.6%

n = 114

32.4%

b

  Hospital 3

n = 150

11.0%

n = 33

9.4%

a

  Hospital 4

n = 100

7.3%

n = 15

4.3%

a

Time of admission

  Regular service hours

n = 499

36.5%

n = 133

37.8%

0

χ²(1) = .198

p = .657

  Outside service hours

n = 868

63.5%

n = 219

62.2%

Length of inpatient stay

  Mean

24.69

36.78

0

W = 302,726

p < .001

.258 [CI .190-.320]

  Standard deviation

34.583

38.151