ssiexh59-61.htm

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

Variable	Estimate	tValue	Probability
Intercept	-3.04	-1.16	0.2480
Emergency surgery	0.76	1.01	0.3111
Previous DVT	1.26	1.87	0.0609
Male	0.34	0.60	0.5500
Postop admission	3.17	3.98	0.0001
Preop albumin	-0.75	-1.30	0.1965
Preop glucose*	0.00	-0.44	0.6643

*Additional Intermountain risk factor.

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

Variable	Estimate	tValue	Probability
Intercept	-3.94	-0.92	0.3794
Emergency surgery	1.21	1.83	0.0676
Previous DVT@
Male	-0.87	-1.37	0.1703
Postop admission	2.91	3.67	0.0002
Preop albumin	-0.44	-0.42	0.6821
Preop glucose*	0.00	0.29	0.7724

@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

Variable	Estimate	tValue	Probability
Intercept	-4.00	-1.96	0.0561
Emergency surgery	1.10	2.37	0.0178
Previous DVT	0.52	0.88	0.3775
Male	-0.23	-0.55	0.5789
Postop admission	3.08	5.53	0.0000
Preop albumin	-0.43	-0.96	0.3446
Preop glucose*	0.00	-0.37	0.7127

*Additional Intermountain risk factor.

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Current as of December 2012

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