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Exhibits 59 to 61

Exhibit 59. Results of logistic regression using the derivation dataset for only herniorrhaphy

VariableEstimatetValueProbability
Intercept-3.04-1.160.2480
Emergency surgery0.761.010.3111
Previous DVT1.261.870.0609
Male0.340.600.5500
Postop admission3.173.980.0001
Preop albumin-0.75-1.300.1965
Preop glucose*0.00-0.440.6643

*Additional Intermountain risk factor.

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Exhibit 60. Results of logistic regression using the validation dataset for only herniorrhaphy

VariableEstimatetValueProbability
Intercept-3.94-0.920.3794
Emergency surgery1.211.830.0676
Previous DVT@   
Male-0.87-1.370.1703
Postop admission2.913.670.0002
Preop albumin-0.44-0.420.6821
Preop glucose*0.000.290.7724

@No patients in this dataset with  had the specific risk factor and no probability could be calculated.
*Additional Intermountain risk factor.

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Exhibit 61. Results of logistic regression using the combined dataset for only herniorrhaphy

VariableEstimatetValueProbability
Intercept-4.00-1.960.0561
Emergency surgery1.102.370.0178
Previous DVT0.520.880.3775
Male-0.23-0.550.5789
Postop admission3.085.530.0000
Preop albumin-0.43-0.960.3446
Preop glucose*0.00-0.370.7127

*Additional Intermountain risk factor.

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Page last reviewed December 2012
Internet Citation: Exhibits 59 to 61. December 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/final-reports/ssi/ssiexh59-61.html