Table 1 Screening criteria and number of medical records showing evidence of one category of adverse event

Hospital-incurred patient injury

101

22.4

Unplanned readmission after discharge from index admission (12 months)

81

18.0

Unplanned admission related to previous healthcare management

43

9.5

Hospital-acquired infection or sepsis

40

8.7

Adverse drug reaction

31

6.9

Unplanned return to the operating room

29

6.4

Any other undesirable outcomes not covered in this list of criteria

28

6.2

Unexpected death

20

4.4

Unplanned transfer from general care to intensive care

17

3.8

Other patient complications

16

3.5

Cardiac or respiratory arrest

14

3.2

Unplanned removal, injury or repair of an organ during surgery

10

2.2

Unplanned transfer to another acute care hospital

6

1.3

Development of neurological deficit not present on admission

6

1.3

Inappropriate discharge to home

6

1.3

Dissatisfaction or correspondence indicating litigation

2

0.44

Injury related to abortion or delivery

1

0.22

Dissatisfaction with care documented in the patient’s medical record

0

0.0

Total

451

100%