Table 2.

Proportion (95% CI) of admissions with AEs classified according to severity

Severity	2013	2014	2015	2016
E: contributed to or resulted in temporary harm and required intervention	7.40 (7.03 to 7.77)	6.08 (5.73 to 6.42)*	5.50 (5.12 to 5.89)*	5.99 (5.57 to 6.40)*
F: contributed to or resulted in temporary harm requiring outpatient care, readmission or prolonged hospital care	6.15 (5.81 to 6.48)	5.84 (5.50 to 6.18)	5.74 (5.36 to 6.13)	5.76 (5.35 to 6.17)
G: contributed to or caused permanent patient harm	0.41 (0.32 to 0.50)	0.27 (0.20 to 0.35)	0.29 (0.20 to 0.38)	0.38 (0.27 to 0.49)
H: event that required lifesaving intervention required within 60 min	0.09 (0.05 to 0.13)	0.08 (0.04 to 0.12)	0.12 (0.06 to 0.17)	0.10 (0.04 to 0.15)
I: contributed to the patient’s death	0.31 (0.23 to 0.38)	0.23 (0.16 to 0.29)	0.23 (0.15 to 0.31)	0.24 (0.15 to 0.32)

*Significant differences compared with 2013.

AEs, adverse events.