Decision-making capacity for research participation among addicted people: a cross-sectional study

BMC Medical Ethics

Table 2 Decisional capacity characteristics

Variable	Substance Use Disorders (n = 52)	Non psychiatric comparison subjects (n = 50)	P Value
Capacity (%)	67.3	84.0	.05 ^b
MacCAT-CR ( mean ± SD)
Understanding subscale score (range, 0–26)	20.1 (5.2)	23.0 (3.5)	<.001^a
Appreciation subscale score (range, 0–6)	5.0 (1.4)	5.7 (0.8)	.003 ^a
Reasoning subscale score (range, 0–8)	6.1 (1.8)	6.5 (1.4)	.359 ^a
Expression of a choice subscale score (range, 0–2)	1.8 (0.5)	2.0 (0.2)	.159 ^a

Abbreviations: SD, standard deviation; MacCAT-CR, MacArthur Competence Assessment Tool for Clinical Research
^a Mann–Whitney U
^b Pearson’s χ2

ISSN: 1472-6939