Table 2.

Reliability of CERAD-PLUS subscales and the result of RCI analyses regarding the changes between pre- and posttreatment performance.

		Jacobson's Reliable Change Index (RCI)
	Reliability Coefficient	Baseline vs. methyl-prednisolone	Baseline vs. immunoglobulins	Baseline vs. plasma-phereses	Methyl-prednisolone vs. immuno-globulins	Methyl-prednisolone vs. plasma-phereses	Immuno-globulins vs. plasma-phereses
Verbal fluency	0.67	0	0.54	−0.52	0.54	−0.52	−1.06
Boston naming test	0.56	1.51	0	1.51	−1.51	0	1.51
Mini-mental state	0.38	−1.96*	2.06*	0	4.01*	1.96	−2.06*
Word list learning	0.62	−1.08	0.72	0	1.80	1.08	−0.72
Word list recall	0.64	−1.11	1.25	−1.11	2.36*	0	−2.36*
Word list recognition (%)	0.36	−1.08	1.40	−0.47	2.47*	0.61	−1.86
Draw figures	0,54	−0,54	−1.12	−1.12	−0.57	−0.57	0
Trail making test A (sec)	0.79	−0.68	−1.17	−1.40	−0.49	−0.73	−0.23
Trail making test B (sec)	0.89	−2.62*	1.22	−0.72	3.84*	1.90	−1.94

RCI values of ≥-1.96 indicate better test performance and values of ≥1.96 indicate worse test performance. In the range from −1.96 to +1.96, no significant change can be assumed.

For reliability for Verbal Fluency, Boston Naming Test, Mini-Mental State, Constructional Practice, Word List Learning, Word List Recall, and Word List Recognition see (8); for Trail Making Tests A and B see (9).

^*Marks significant differences.