Table 1.

The MacCAT-T scores of the patient participants

Participant	Max mark	A	B	C	D	E	F	G	H	I	J	Medians	Mean	Standard deviation
Understanding	6	4	6	6	6	6	6	6	6	6	6	6	5.8	0.632455
Appreciation	4	4	3	4	4	4	4	3	4	4	4	4	3.8	0.421637
Reasoning	8	4	5	6	7	8	8	6	8	6	6	6	6.4	1.349897
Expressing choice	2	2	2	2	2	2	2	2	2	2	2	2	2	0

Note: The MacCAT-T instrument of competence requires the use of a structured format in which the health professional gives the patient information about both the disorder and the treatment options being offered, and comprehension is checked immediately by asking the patient to repeat the information in his or her own words. The patient is then probed using set questions to assess the level of appreciation of the information, reasoning with respect to each of the different treatment options, the benefits and risks of each option, and the ability to compare the treatment options and reason about consequences of choosing each option. To conclude, the patient’s ability to express a final choice and provide a reason for this is assessed. There is no pass mark but the tool is used to assist the more subjective clinical judgement of the tester.