Table II.

Criterion Validity Estimates of PSI version 4.1a and VASQIP AEs (FY03-07) and PSI version 3.0 and VASQIP AEs (FY01)

Comparison Group		Current Results for PSI version 4.1a, FY03-07 Data					Previous Results for PSI version 3.0, FY01 Data
PSI	VASQIP AE	Cases eligible for PSI (%)*	VASQIP- Detected AEs (%)**	PSI- Detected AEs (%)**	PSI Sensitivity§ (95% CI)	PSI PPV† (95% CI)	PSI Sensitivity§ (95% CI)	PSI PPV† (95% CI)
#10 PMD	ARF	131,711 (49%)	442 (0.3%)	322 (0.2%)	48% (44–53%)	66% (61–72%)	48% (36–61%)	63% (48–75%)
#11 RF	FW	109,916 (41%)	2,151 (2.0%)	2,047 (1.9%)	68% (66–70%)	72% (70–74%)	63% (57–67%)	68% (62–73%)
	R/UI
#12 PE/DVT	PE	253,090 (95%)	1,588 (0.6%)	3,323 (1.3%)	65% (63–67%)	31% (30–33%)	56% (50–63%)	22% (19–25%)
	DVT
#13 Sepsis	SS	47,523 (18%)	570 (1.2%)	397 (0.8%)	31% (27–35%)	44% (39–49%)	37% (27–49%)	45% (33–57%)
#14 WD	Dehiscence	74,251 (28%)	1,254 (1.7%)	544 (0.7%)	31% (29–34%)	72% (68–76%)	29% (24–34%)	72% (63–80%)

Notes: Parentheses contain 95% confidence intervals; PSI specificity estimates exceeded 99.1%; Italicized values indicate a significant difference between estimates in our previous study (Romano, 2009).

^*Percent of the PTF-VASQIP matched sample of 268,771 hospitalizations.

^**Percent of the hospitalizations eligible for the corresponding PSI.

^§Sensitivity represents the proportion of the VASQIP-detected AEs flagged by the PSI.

^†PPV - positive predictive value - represents the proportion of PSI-flagged hospitalizations with a VASQIP-detected AE.

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 W

SS=Systemic Sepsis