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Table 4 Univariate estimation of excess length of stay and excess costs (in Euro) of adverse events

From: Direct medical costs of adverse events in Dutch hospitals

Cost categories

All Adverse events* (n = 663, weighted n = 456)

Preventable Adverse events* (n = 283, weighted n = 182)

Disability**

N

Mean days (se)

Cost in € including interventions (se)

N

Mean volume (se)

Cost in € (se)

No disability

115

5.5 (1.0)

2970 (475)

29

5.6 (1.7)

2979 (781)

Minor disability

276

10.4 (0.7)

5174 (598)

117

11.2 (1.2)

5973 (1332)

Permanent disability

21

16.0 (3.1)

6232 (1331)

16

16.8 (3.9)

6649 (1667)

Deceased

35

7.8 (2.8)

4566 (1636)

17

7.0 (5.0)

3831 (2263)

Speciality

      

Surgical

293

10.1 (0.7)

5474 (601)

115

10.7 (1.3)

6122 (1371)

Medical

163

7.4 (0.8)

2909 (339)

66

9.7 (1.6)

3831 (654)

Type of hospital

      

Academic

80

10.1 (1.5)

5488 (858)

17

15.7 (3.3)

8100 (1515)

General hospitals

376

8.9 (0.6)

4356 (460)

165

9.7 (1.1)

4992 (985)

Age categories

      

1–18 years

10

1.4 (0.4)

597 (127)

2

0 (0)

0 (0)

19–40 years

54

12.2 (1.9)

5303 (854)

22

12.3 (3.3)

4727 (1280)

41–65 years

161

7.1 (0.8)

3736 (379)

61

8.2 (1.5)

3652 (537)

66–79 years

139

11.9 (1.2)

6413 (1170)

55

14.8 (2.2)

9290 (2770)

80 years and over

91

7.5 (1.0)

3134 (407)

42

6.9 (1.5)

2923 (700)

ICD9DE primary groups***

      

Neoplasms

52

8.8 (2.1)

7636 (2923)

13

14.4 (6.8)

18734 (10772)

Circulatory system

86

7.5 (1.0)

4396 (608)

26

10.7 (2.2)

4542 (853)

Respiratory system

31

6.1 (1.7)

2519 (751)

18

7.0 (2.8)

2938 (1235)

Digestive system

45

10.4 (1.9)

4789 (951)

20

9.3 (3.3)

3963 (1179)

Genitourinary system

35

8.5 (1.3)

4068 (916)

13

13.7 (2.7)

6640 (2250)

Muscoskeletal system and connective tissue

41

7.4 (1.6)

3093 (553)

16

3.1 (0.7)

1601 (330)

Symptoms, signs, and ill-defined conditions

33

7.8 (1.4)

2834 (484)

13

11.1 (2.8)

3831 (981)

Injury and poisoning

69

14.4 (1.8)

6084 (781)

31

14.2 (2.9)

5976 (1172)

Admission departments***

      

Cardiology

54

8.8 (1.7)

3852 (766)

18

9.7 (2.2)

3685 (787)

Surgery

146

10.7 (1.0)

5443 (455)

59

12.2 (2.0)

4962 (746)

Intensive Care

10

16.0 (7.8)

29307 (14313)

5

28.3 (13.7)

52058 (25329)

Internal Medicine

68

8.8 (1.5)

3423 (595)

15

13.4 (4.7)

5451 (1906)

Pulmonary diseases

31

7.9 (2.6)

3137(955)

22

7.7 (3.5)

3010 (1251)

Neurology

21

7.3 (2.3)

2700 (1002)

13

10.8 (3.5)

4057 (1572)

Orthopaedic

42

9.0 (1.5)

3739 (532)

22

4.4 (0.8)

2362 (317)

Urology

26

9.5 (1.0)

3854 (375)

8

11.3 (1.6)

4336 (703)

Type of AE

      

Diagnostics

29

12.0 (2.8)

4812 (1250)

24

13.4 (3.2)

5433 (1444)

Surgical

249

10.3 (0.8)

5764 (695)

84

10.8 (1.7)

6735 (1854)

Intervention (non surgical)

81

6.0 (0.8)

2414 (337)

26

9.6 (1.9)

3454 (706)

Medication

66

8.1 (1.4)

3105 (579)

21

9.2 (2.9)

3992 (1309)

Other clinical activities

16

5.1 (1.6)

2438 (757)

13

6.0 (1.8)

2832 (856)

Discharge

6

18.5 (6.9)

6856 (2477)

6

18.5 (6.9)

6856 (2478)

Other

11

5.2 (2.0)

2828 (1545)

9

2.9 (1.6)

2131 (1740)

  1. * Figures were weighted for oversampling of deceased patients and of patients admitted to a university hospital.
  2. ** Unable to determine in 9 and 3 patients in respectively all AEs and preventable AEs
  3. *** Largest ICD-9-DE groups only