Table 2.

Concordance of patient and caregiver responses to decision control preferences question by patients’ hypothetical cognitive status

Patient responses	Caregiver responses						Concordance
	Patient decision	Patient dominance	Family dominance	Family decision	Missing response	Total	Agreement (%)	Weighted κ
Scenario 1: Intact cognition
Patient decision	33a)	35	20	1	1	90	46.48	0.319
Patientdominance	23	59a)	36	7	0	125
Family dominance	9	27	65a)	6	1	108
Family decision	1	7	18	8a)	0	34
Missing response	0	1	0	0	0	1
Total	66	129	139	22	2	358
Scenario 2: Mild impairment in cognition
Patient decision	4a)	12	13	2	1	32	48.98	0.258
Patientdominance	2	43a)	51	2	5	103
Family dominance	4	36	101a)	17	4	162
Family decision	2	6	28	20a)	0	56
Missing response	0	0	3	0	2	5
Total	12	97	196	41	12	358
Scenario 3: Severe impairment in cognition
Patient decision	3a)	2	7	3	0	15	60.74	0.363
Patient dominance	0	7a)	13	7	2	29
Family dominance	3	10	64a)	26	0	103
Family decision	0	6	60	138a)	3	207
Missing response	0	0	0	3	1	4
Total	6	25	144	177	6	358

Weighted kappa values are statistically significant for all scenarios (p < 0.05).

^a)Agreement between patient and caregiver in the dyads.