Table 1.

Number of case reviews, positive triggers and adverse events by individual hospital

Hospital	Case notes reviewed	Positive triggers	Average number of triggers per case note review	Adverse events (AEs)	Average number of AEs per case note review	Number of individual patients harmed (%)
A	622	1877	3.02	309	0.50	162 (26)
B	369	579	1.57	66	0.18	31 (8)
C	321	415	1.29	60	0.19	37 (11.5)
D	309	481	1.56	117	0.38	49 (15.9)
E	285	414	1.45	84	0.29	43 (15.1)
F	271	454	1.68	112	0.41	54 (20)
G	260	484	1.86	48	0.18	39 (15)
H	241	418	1.73	6	0.02	4 (1.7)
I	195	432	2.22	14	0.07	14 (7.2)
J	195	52	0.27	3	0.02	3 (1.5)
K	190	446	2.35	45	0.24	40 (21)
L	124	173	1.40	17	0.14	15 (12.1)
M	71	52	0.73	0	0.00	0 (0)
N	70	171	2.44	8	0.11	7 (10)
O	68	141	2.07	8	0.12	7 (10.3)
P	68	107	1.57	1	0.01	1 (1.5)
Q	66	79	1.20	15	0.23	11 (16.7)
R	62	84	1.35	15	0.24	12 (19.3)
S	60	121	2.02	32	0.53	15 (25)
T	59	90	1.53	2	0.03	1 (1.7)
U	23	22	0.96	4	0.17	3 (13)
V	19	14	0.74	1	0.05	1 (5.2)
W	17	26	1.53	4	0.24	4 (23.5)
X	15	50	3.33	27	1.80	11 (73.3)
Y	12	17	1.42	3	0.25	3 (25)
Overall	3992	7199	1.65	1001	0.26	567 (14.2)