Table 2

Severity and type of adverse drug events

	Total (n=1207)	No. of residents	Incidence*	95% CI	Preventable (n=437)	No. of residents	Incidence*	95% CI
Severity
Fatal	10	9	0.3	0.1 to 0.5	3	3	0.1	0.0 to 0.2
Life-threatening	35	31	1.1	0.7 to 1.4	13	13	0.4	0.2 to 0.6
Serious	153	102	4.6	3.9 to 5.3	46	23	1.4	1.0 to 1.8
Significant	1009	324	30.4	28.6 to 32.3	375	106	11.3	10.1 to 12.5
Types
Neuropsychiatric	559	162	16.9	15.5 to 18.3	285	65	8.6	7.6 to 9.1
Fall caused byCNS agents	411	135	12.4	11.2 to 13.6	269	77	8.1	7.1 to 9.1
Oversedation	91	79	2.7	2.2 to 3.3	8	8	0.2	0.1 to 0.4
Psychiatric symptoms	31	29	0.9	0.6 to 1.3	6	6	0.2	0.0 to 0.3
Extrapyramidal symptoms	18	18	0.5	0.3 to 0.8	1	1	0.0	0.0 to 0.1
Gastrointestinal	310	234	9.4	8.3 to 10.4	11	11	0.3	0.1 to 0.5
Constipation	177	168	5.3	4.6 to 6.1	2	2	0.3	0.1 to 0.4
Diarrhoea	109	104	3.3	2.7 to 3.9	9	9	0.3	0.1 to 0.4
Cardiovascular	132	61	4.0	3.3 to 4.7	45	18	1.4	1.0 to 1.8
Fall caused by cardiovascular agents	69	24	2.1	1.6 to 2.6	38	13	1.1	0.8 to 1.5
Hypotension	41	39	1.2	0.9 to 1.6	6	6	0.2	0.0 to 0.3
Allergies/Skin disorders	97	48	2.9	2.3 to 3.5	83	40	2.3	2.0 to 3.0
Leakage of fluid	82	39	2.5	1.9 to 3.0	82	39	2.5	1.9 to 3.0
Haemorrhagic	74	61	2.2	1.7 to 2.7	1	1	0.0	0.0 to 0.1
Internal bleeding	31	31	0.9	0.6 to 1.3	0	0	0.0	0.0 to 0.0
Respiratory	9	9	0.3	0.1 to 0.4	4	4	0.1	0.0 to 0.2
Electrolytes	9	6	0.3	0.1 to 0.4	3	3	0.1	0.0 to 0.2
Renal/Urinary	7	7	0.2	0.1 to 0.4	0	0	0.0	0.0 to 0.0
Hepatic	1	1	0.0	0.0 to 0.1	0	0	0.0	0.0 to 0.0
All cause falls	480	126	14.5	13.2 to 15.8	307	68	9.3	8.2 to 10.3
All events	1207	336	36.4	34.4 to 38.5	437	120	13.2	11.9 to 14.4

CNS, central nervous system.