Table 3

Odds ratios (and 95% CIs) for exposures, adjustedfor covariates and stratified by surgical procedure.

HIP PROCEDURES

KNEE PROCEDURES

Exposure

VTE yes

VTE no

OR

CIs

VTE yes

VTE no

OR

CIs


No Comorbidity

410

57403

1.00

(ref)

1458

131682

1.00

(ref)

CVD vs.

3

567

0.71

(0.23-2.23)

21

1335

1.42

(0.92-2.20)

CAD vs.

68

9064

0.98

(0.76-1.28)

257

19760

1.19

(1.04-1.37)

CHF vs.

25

1072

3.08

(2.05-4.65)

73

2673

2.47

(1.95-3.14)

Diabetes vs.

47

7735

0.85

(0.63-1.15)

282

26458

0.96

(0.85-1.10)

COPD vs.

60

7929

1.06

(0.81-1.39)

273

16563

1.49

(1.31-1.70)

CAD and CHF vs.

12

719

2.11

(1.18-3.78)

33

1645

1.86

(1.30-2.60)

CAD & COPD vs.

16

1715

1.25

(0.75-2.06)

52

3314

1.44

(1.09-1.90)

Diabetes & CAD vs.

18

2302

1.05

(0.65-1.69)

47

7108

0.61

(0.45-0.81)

Diabetes & COPD vs.

9

1172

1.09

(0.56-2.11)

36

3652

0.89

(0.64-1.24)

All other combinations

34

2691

1.69

(1.19-2.40)

111

6767

1.49

(1.23-181)

Age 65-69

163

23242

1.00

(ref)

734

62629

1.00

(ref)

Age 70-74 vs. Age 65-69

167

24721

0.96

(0.77-1.19)

751

62857

1.01

(0.91-1.12)

Age 75-79 vs. Age 65-69

172

23144

1.05

(0.84-1.30)

649

53929

1.00

(0.90-1.12)

Age ≥80 vs. Age 65-69

200

21262

1.30

(1.05-1.60)

509

41542

0.99

(0-89-1.11)

Females

411

58081

1.00

(ref)

1746

143315

1.00

(ref)

Males

291

34287

1.21

(1.04-1.41)

897

77642

0.94

(0.87-1.02)

Total observations

702

92369

2643

220957


Associations adjusted in multivariate logistic regression for each comorbidity exposure as compared with the group with none of the listed comorbidities or co-occurring comorbidities. All association were adjusted for age group and sex. We also assessed race, insurance status, hospital surgical volume, obesity, bi-laterality (two primary procedures during the same surgery) and hypercoagulable state but deleted them from the final model for lack of confounding. Abbreviations: CAD = coronary artery disease, CHF = congestive heart failure, COPD = chronic obstructive pulmonary disease, CVD = cerebrovascular disease.

Kapoor et al. BMC Geriatrics 2010 10:63   doi:10.1186/1471-2318-10-63

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