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Volume 9, Number 2—February 2003

Research

Health and Economic Impact of Surgical Site Infections Diagnosed after Hospital Discharge

Eli N. Perencevich*†Comments to Author , Kenneth E. Sands*†, Sara E. Cosgrove*, Edward Guadagnoli‡, Ellen Meara‡, and Richard Platt§†‡
Author affiliations: *Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA; †Centers for Disease Control and Prevention Eastern Massachusetts Prevention Epicenter, Boston, Massachusetts, USA; ‡Harvard Medical School, Boston, Massachusetts, USA; §Brigham and Women’s Hospital, Boston, Massachusetts, USA

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Table 5

Results of five separate matched linear regression models with log-transformed total costs as the outcome variable, surgical sites infection (SSI) study

Model no. Predictor variable β parameter estimate Standard error p value R2
1
SSI (case)
1.30
0.21
<0.001
0.492
2
Chronic disease score
0.00018
0.00006
0.002
0.095
3
SSI (case)
1.20
0.21
<0.001
0.507
Chronic disease score
0.00012
0.00005
0.03
4
SSI (case)
1.27
0.22
<0.001
0.499
Index surgery duration
0.0017
0.0017
0.3
5 SSI (case)
1.17
0.22
<0.001
0.514
Chronic disease score
0.0001
0.00005
0.02
Index surgery duration 0.0018 0.0017 0.3

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