Table 4. Global Trigger Tool Analysis on those patients in whom a decision not to attempt resuscitation was made (DNACPR group n = 103; UFTO group n  = 118).

	DNACPR period A (May–July 2010)	UFTO period B (Nov 2010–Jan 2011)	Between group difference(95% CI)	P–value§
Harm rate per 100 admissions	68.9	37.3	31.6 (12.2 to 51.1)	0.001
Harm rate per 1000 patient days	34.7	21.8	12.9 (2.6 to 23.2)	0.01
Harms contributing to patient death(categories H and I)	23/71 (32%)	4/44 (9.1%)	23.3% (7.8% to 36.1%)	0.006
Harms preventable on any level (categories 2–4)	66/71 (93%)	43/44 (98%)	–4.8% (–13.4% to 5.6%)	0.40