Two assessments to evaluate imagery ability: translation, test-retest reliability and concurrent validity of the German KVIQ and Imaprax

Table 6 Test retest reliability for the KVIQ-G subscales for the short and long version and the Imaprax-G visual subscale

		Subacute group N = 17*	Chronic group N = 34†	Left parietal lobe involved N = 7†	Multiple Sclerosis N = 7	Parkinson’s disease N = 8	Total N = 73
ICC KVIQ-G 10 (25)*	vis	0.86	0.82	0.62	0.51	0.69	0.77
95 % CI	vis	0.66 – 0.95	0.67 – 0.90	−0.10 – 0.92	−0.67 – 0.94	0.10 – 0.89	0.66 – 0.85
ICC KVIQ-G 10 (25)*	kin	0.79	0.80	0.88	0.92	0.84	0.85
95 % CI	kin	0.51 – 0.92	0.64 – 0.89	−0.52 – 0.98	0.66 – 0.99	0.44 – 0.97	0.77 – 0.90
ICC KVIQ-G 20 (50)*	vis	0.83	0.84	0.77	0.43	0.68	0.77
95 % CI	vis	0.60 – 0.94	0.71 – 0.92	0.20 – 0.96	−0.35 – 0.87	0.08 – 0.93	0.65 – 0.85
ICC KVIQ-G 20 (50)*	kin	0.80	0.75	0.91	0.95	0.82	0.83
95 % CI	kin	0.54 – 0.92	0.56 – 0.87	0.61 – 0.98	0.75 – 0.99	0.39 – 0.96	0.74 – 0.89
ICC KVIQ-G total (100)	vis + kin	0.85	0.87	0.84	0.79	0.86	0.87
95 % CI	vis + kin	0.64 – 0.94	0.77 – 0.94	0.38 – 0.97	0.26 – 0.96	0.48 – 0.97	0.80 – 0.92
ICC Imaprax	vis	0.84	0.34	0.77	0.37	0.74	0.51
95 % CI		0.62 – 0.94	0.005 – 0.60	0.19 – 0.95	−0.40 – 0.85	0.14 – 0.95	0.32 – 0.66

Legend: N = sample size, vis = visual subscale, kin = kinaesthetic subscale, ICC = Intraclass correlation coefficient, CI = confidence interval, ^* maximum score.

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