Table 2.

Results of individual triggers and AEs^c.

Triggers	Number of records (% of total)b	Non preventable AE	Potentially preventable AE	Total number of AE combined (preventable and non- preventable)d	Percentage of total number of AEs	PPV potentially preventable AE (95%CI)a	PPV AE combined (preventable and not preventable) (95%CI)a
1.Unplanned readmission < 3 months	379 (17.4)	97	47	144	23.0	0.33 (0.25–0.40)	0.38 (0.33–0.43)
2.Hospital incurred patient injury	116 (5.3)	44	32	76	12.2	0.42 (0.31–0.53)	0.66 (0.57–0.74)
3.Adverse drug reaction	77 (3.5)	34	13	47	7.5	0.28 (0.14–0.41)	0.61 (0.50–0.72)
4.Unplanned transfer to ICU	441 (20.2)	158	107	265	42.4	0.40 (0.34–0.46)	0.60 (0.56–0.65)
5.Unplanned return to the operating room	173 (7.9)	75	67	142	22.7	0.47 (0.39–0.55)	0.82 (0.76–0.88)
6.Unplanned removal or damage to an organ during surgery	76 (3.5)	29	29	58	9.3	0.50 (0.37–0.63)	0.76 (0.67–0.86)
7.Healthcare related infection or sepsis	509 (23.3)	176	99	275	44.0	0.36 (0.30–0.42)	0.54 (0.50–0.58)
8.Other complications such as CVA/lung embolism/acute myocardial infarction/TIA	350 (16.0)	131	77	208	33.3	0.37 (0.30–0.44)	0.59 (0.54–0.65)
9.Development of neurological deficit	129 (5.9)	54	22	76	12.2	0.29 (0.19–0.39)	0.59 (0.50–0.68)
10.(Initial) unexpected and/or sudden death, absence of terminal care	266 (12.2)	84	56	140	22.4	0.40 (0.32–0.48)	0.53 (0.47–0.59)
11.Cardiac or respiratory arrest	197 (9.0)	72	50	122	19.5	0.41 (0.32–0.50)	0.62 (0.55–0.69)
12.Injury related to abortion or delivery	–	–	–	–	–	–	–
13.Dissatisfaction with care	59 (2.7)	19	11	30	4.8	0.37 (0.18–0.55)	0.51 (0.38–0.64)
14.Documentation indicating litigation	14 (0.6)	3	6	9	1.4	0.67 (0.28–1.05)	0.64 (0.36–0.93)
15.Other patient complications	224 (10.3)	57	35	92	14.7	0.38 (0.28–0.48)	0.41 (0.35–0.48)

^aCI is confidence interval.

^bTotal number of records is 2182.

^cThe same AE can be found with different triggers, it was not possible to determine which trigger in this case was related to the AE.

^dTotal number of AEs is 625.