Table II.

Component weights of the Patient Safety Indicator (PSI) composite metric (PSI-90) as defined by the Agency for Healthcare Research and Quality (AHRQ) in the 2019 update

Component	Description	Harm weight	Volume weight	Component weight
PSI-3	Pressure ulcer rate	0.3080	0.0860	0.1373
PSI-6	Iatrogenic pneumothorax rate	0.1381	0.0538	0.0385
PSI-8	In-hospital fall with hip fracture rate	0.1440	0.0172	0.0128
PSI-9	Perioperative hemorrhage or hematoma rate	0.0570	0.1598	0.0472
PSI-10	Postoperative AKI requiring dialysis rate	0.3584	0.0280	0.0520
PSI-11	Postoperative respiratory failure rate	0.2219	0.1821	0.2094
PSI-12	Perioperative PE or DVT rate	0.1557	0.2543	0.2052
PSI-13	Postoperative sepsis rate	0.3102	0.1550	0.2491
PSI-14	Postoperative wound dehiscence rate	0.1441	0.0138	0.0103
PSI-15	Unrecognized abdominopelvic accidental puncture or laceration rate	0.1474	0.0500	0.0382
PSI-90	Composite sum	–	–	1.0000

AKI, Acute kidney injury; DVT, deep venous thrombosis; PE, pulmonary embolism.