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Table 2 Cost drivers at patient level – quality included as four complications variables

From: Is quality costly? Patient and hospital cost drivers in vascular surgery

Variable name

Parameter estimate (2009 EURO’s)

Standard error

t value

Probability of estimate = 0

Department 1

1,728*

599

2.88

0.0039

Department 2

1,192

638

1.87

0.0615

Department 3

356

531

0.67

0.5027

Department 4

−187

523

−0.36

0.7200

Department 5

−743

527

−1.41

0.1590

Department 6

2,259*

523

4.32

< .0001

Department 7

−421

862

−0.49

0.6254

Department 8

1,772*

538

3.29

0.0010

Department 9

581

541

1.07

0.2827

2006

475

255

1.87

0.0620

2007

1,819*

222

8.19

< .0001

2008

367

241

1.53

0.1273

2009

1,142*

225

5.07

< .0001

DRG index

4,563*

245

18.88

< .0001

DRG index squared

637*

51

12.47

< .0001

Age less than 50

53

266

0.20

0.8424

Age 50-60

64

226

0.28

0.7760

Age 70-80

111

180

0.62

0.5372

Age 80-90

178

234

0.76

0.4470

Age 90+

−1,146

646

−1.77

0.0760

Woman

−520*

147

−3.55

0.0004

Daily smoker

−51

93

−0.55

0.5853

BMI information missing

1,066*

447

2.39

0.0170

Underweight

−233

437

−0.53

0.5937

Overweight

−41

193

−0.21

0.8300

Obese

318

259

1.23

0.2201

Very obese

−1,505

910

−1.65

0.0983

Diabetes

−105

105

−1.01

0.3143

Cerebral comorbidity

−193*

82

−2.35

0.0186

Hypertension

−399*

123

−3.26

0.0011

Cardiac comorbidity

15

53

0.28

0.7795

Pulmonary comorbidity

494*

175

2.82

0.0048

Very acute admission

2,306*

547

4.21

< .0001

Acute admission

857*

321

2.67

0.0077

Elective

589

300

1.96

0.0500

Severity information missing

−322

403

−0.80

0.4249

Moderate (ASA = 2)

−481*

201

−2.40

0.0166

Severe (ASA = 3)

−234

237

−0.98

0.3249

Very severe/fatal (ASA > 3)

1,266*

454

2.79

0.0053

Lenght of stay

493*

10

47.21

< .0001

Wound complications

606*

245

2.45

0.0145

Surgical complications

4,935*

367

13.46

< .0001

Infections

715

470

1.52

0.1281

General complications

5,296*

297

17.80

< .0001

Number of observations

20,067

   

R 2

0.63

   
  1. NOTE: Parameter estimates that are statistically significant at 5 per cent level have the suffix *.
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Health Economics Review

ISSN: 2191-1991

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