Analysis of factors contributing to medication errors during self-management of medication in the rehabilitation ward: a case control study

Table 1 Patient background

	Patients who made a medication error (n = 154)		Patients who did not make a medication error (n = 194)		P
Age, median (IQR), years	76	(65–82)	75	(65–82)	0.65 ^a)
sex, n (%)
men	79	(51)	84	(43)	0.14^b)
women	75	(49)	110	(57)
Length of hospital stay, median (IQR), day	48	(34–71)	42	(24–57)	0.01 ^a)
Length of self-administration of medication, median (IQR), day	34	(24–57)	27	(15–44)	< 0.01 ^a)
Primary medical department, n (%)
Neurology	65	(42)	79	(41)	0.78 ^b)
Orthopedic Surgery	60	(39)	81	(42)	0.60 ^b)
Neurosurgery	29	(19)	34	(18)	0.75 ^b)
MMSE, median, (IQR), score	28	(25–29)	27	(25–29)	0.38 ^a)
Unknown, n (%)	18	(12)	44	(23)
FIM, median, (IQR), score
FIM-M
admission	61	(52–70)	64	(52–72)	0.37 ^a)
discharge	83	(76–87)	83	(77–87)	0.37 ^a)
FIM-C
admission	31	(28–34)	31	(28–34)	0.40^a)
discharge	34	(31–35)	34	(31–35)	0.61 ^a)

IQR Interquartile range, MMSE Mini-Mental State Examination, FIM-M Functional Independence Measure-Motor, FIM-C Functional Independence Measure-Cognition, a) Mann–Whitney U test, b) χ² test