Table III.

Reasons for Disagreement in Surgical AE Detection between PSI version 4.1a and VASQIP

Comparison Group		Total VASQIP- only Cases Reviewed*	Chart Review Results for VASQIP - Only Cases			Total PSI- Only True Positives Re- Reviewed**	Chart Review Results for PSI-Only Cases
PSI	VASQIP AE		Differences in Definition (%)	PSI False Negative (%)	Unable to Determine (%)		Differences in Definition (%)	PSI False Positive (%)†	Unable to Determine (%)
#10 PMD	ARF	20/228	6 (30%)	5 (25%)	9 (45%)	16/108	5 (31%)	NA	11 (69%)
#11 RF	FW	20/683	13 (65%)	6 (30%)	1 (5%)	15/579	1 (7%)	NA	14 (93%)
	R/UI
#12 PE/DVT	PE	20/554	-	15 (75%)	5 (25%)	20/2,289	6 (30%)	NA	14 (70%)
	DVT
#13 Sepsis	SS	20/395	11 (55%)	8 (40%)	1 (5%)	15/222	4 (27%)	NA	11 (73%)
#14 WD	Dehiscence	20/862	-	15 (75%)	5 (25%)	20/152	-	NA	20 (100%)

^*This column shows the number of hospitalizations reviewed out of the number of PSI-eligible hospitalizations with an AE detected by VASQIP only.

^**This column shows the number of PSI Validation Study true positive hospitalizations re-reviewed out of the number of PSI-eligible hospitalizations in our sample with an AE detected by the PSI only.

^†We matched PSI-only cases with PSI Validation Study chart review results, and limited our chart review to cases that were deemed true AEs in the Validation Study. As a result, we do not have any PSI false positive cases.

PMD= Postoperative Physiologic and Metabolic Derangement

RF= Postoperative Respiratory Failure

PE= Postoperative Pulmonary Embolism

DVT= Postoperative Deep Vein Thrombosis

WD= Postoperative Wound Dehiscence

ARF= Acute Renal Failure

FW=Failure to Wean

R/UI= Reintubation/Unplanned Intubation

SS=Systemic Sepsis