Table 2.

Test-retest reliability scores ICC(A,1), Cronbach α, and Cohen d of the sSDMT for persons with multiple sclerosis and the healthy control matched group. The numbers in the parentheses after the ICCs(A,1) indicate lower and upper boundaries of the 95% confidence interval, respectively.

Test-retest	ICCa(A,1) persons with MSb	ICC(A,1), HCc subjects	Cronbach α of persons with MS	Cronbach α of HC subjects	Cohen d of persons with MS	Cohen d of HC subjects
1	0.747 (0.297-0.902)	0.735 (0.401-0.888)	.903	.875	0.477	0.384
2	0.937 (0.863-0.972)	0.859 (0.688-0.940)	.967	.926	0.062	0.153
3	0.899 (0.788-0.953)	0.885 (0.740-0.952)	.945	.943	0.030	0.160
4	0.849 (0.690-0.930)	0.797 (0.554-0.916)	.922	.889	0.160	0.169
5	0.805 (0.611-0.909)	0.820 (0.567-0.931)	.893	.895	0.138	0.000
6	0.880 (0.752-0.944)	0.913 (0.764-0.970)	.934	.952	0.041	0.072
7	0.939 (0.867-0.972)	0.837 (0.586-0.942)	.968	.908	0.059	0.095
8	0.915 (0.814-0.963)	0.961 (0.871-0.989)	.956	.978	0.094	0.000
9	0.898 (0.769-0.957)	0.904 (0.644-0.977)	.946	.946	0.107	0.098
mean	0.874 (0.717-0.945)	0.857 (0.646-0.945)	.937	.924	0.130	0.126

^aICC: intraclass correlation coefficient.

^bMS: multiple sclerosis.

^bHC: healthy control.