Table 4 Incidence density (number of adverse events per 1000 days of hospitalisation) of adverse events identified during hospitalisation according to preventability and to main exposure or mechanism.

	All adverse events		Preventable adverse events
	n (%)	95% CI	n (%)	95% CI
Invasive procedure	168 (4.4)	3.6% to 5.1%	56 (1.4)	1.0% to 1.8%
Including surgical operations	124 (3.2)	2.6% to 3.9%	39 (1.0)	0.6% to 1.4%
Healthcare product	71 (1.8)	1.3% to 2.2%	30 (0.7)	0.4% to 1.0%
Including medications	52 (1.3)	0.9% to 1.7%	22 (0.5)	0.2% to 0.7%
Care‐related infection	57 (1.6)	1.1% to 2.0%	17 (0.4)	0.2% to 0.6%
Including surgical wound infections	13 (0.3)	0.1% to 0.5%	1 (0.02)	0% to 0.3%