Table 4.

C-Statistics for Cross-Validation of Models Predicting Outcomes Within 30 Days of Total Joint Arthroplasty.

Outcome	LASSO	Boosted
Cardiac complications	0.73 (0.70–0.76)	0.75 (0.71–0.79)
30-d mortality	0.69 (0.63–0.76)	0.73 (0.66–0.79)
Progressive renal insufficiency	0.65 (0.62–0.67)	0.69 (0.66–0.72)
Respiratory complications	0.63 (0.60–0.67)	0.66 (0.63–0.69)
Systemic sepsis	0.63 (0.57–0.69)	0.68 (0.62–0.74)
Wound complications	0.62 (0.59–0.66)	0.66 (0.61–0.71)
CNS complications	0.59 (0.53–0.65)	0.62 (0.55–0.69)
Return to OR	0.57 (0.55–0.60)	0.60 (0.57–0.63)
DVT/Thrombophlebitis	0.58 (0.54–0.61)	0.59 (0.55–0.64)
Any complication	0.58 (0.57–0.60)	0.60 (0.57–0.63)

CNS, central nervous system; DVT, deep vein thrombosis; LASSO, least absolute shrinkage and selection operator; OR, operating room.