Table 1.

Interventions reported

Classification	Number (%) of problems	Origin of problem			Prescription type
		Clinical	Legal	Organisational	Non-EPS	EPSR1	EPSR2
Unsigned	30 (43 %)	0	30	0	19	11	0
Incomplete prescription	6 (9 %)	6	0	0	2	0	4
Missing prescription	5 (7 %)	2	0	3	2	1	2
Drug-drug interaction	4 (6 %)	4	0	0	3	1	0
Incorrect formulation	4 (6 %)	4	0	0	3	0	1
Incorrect drug	4 (6 %)	4	0	0	4	0	0
Incorrect quantity	4 (6 %)	4	0	0	3	1	0
Supply problem	3 (4 %)	0	0	3	0	1	2
Missing item	2 (3 %)	2	0	0	2	0	0
Incorrect dose	2 (3 %)	2	0	0	2	0	0
Duplicate drug	2 (3 %)	2	0	0	0	2	0
Incorrect instructions	2 (3 %)	2	0	0	1	0	1
Illegible prescription	1 (1 %)	1	0	0	1	0	0
Total (% of all problems)	69 (100 %)	33 (48 %)	30 (43 %)	6 (9 %)	42 (61 %)	17 (25 %)	10 (14 %)