Table 1:

Selected patient safety indicators reported in the Discharge Abstract Database, 2005/06 to 2014/15

Patient safety indicator (15)	No. of events^* n = 339 741	Model
Patient safety indicator (15)	No. of events^* n = 339 741	Surgical n = 168 886	Obstetrical n = 97 982
03 Pressure ulcer event	38 136
05 Retained surgical item or unretrieved device fragment events	1979	×
06 Iatrogenic pneumothorax event	21 343
07 Central venous catheter-related blood stream infection event	13 394	×
08 Postoperative hip fracture event	16 848
10 Postoperative physiologic and metabolic derangement event	12 009	×
11 Postoperative respiratory failure event	5453	×
12 Perioperative pulmonary embolism or deep vein thrombosis event	32 066	×
13 Postoperative sepsis event	7450	×
14 Postoperative wound dehiscence event	5781	×
15 Accidental puncture or laceration event	87 132	×
16 Transfusion reaction event	168	×
17 Birth trauma event – injury to neonate	15 827		×
18, 19 Obstetric trauma event – vaginal delivery with or without instrument	82 155		×

↵* Within the same model, if a case from the Discharge Abstract Database involved more than 1 patient safety indicator event, it was counted only once. Some records involved multiple indicator events for different models, and these events were counted separately for different models.