TABLE 2.

Differences between test and retest performance in repeatable battery for the assessment of neuropsychological status (RBANS) (N = 502).

RBANS score, x̄ ± SD	Test	Retest	Difference score (mean)	Difference score (range)	Cohen’s dz	P-value
Total scale	102.7 ± 11.8	106.6 ± 12.9	3.9	–20, 38	0.48	< 0.001
Immediate memory index	101.6 ± 12.7	109.2 ± 13.4	7.6	–28, 35	0.70	< 0.001
Delayed memory index	100.7 ± 10.1	104.0 ± 10.6	3.3	–35, 36	0.35	< 0.001
Visuospatial construction index	95.8 ± 14.1	96.6 ± 14.3	0.8	–37, 41	0.06	0.176
Language index	104.1 ± 11.5	104.8 ± 13.0	0.7	–42, 41	0.06	0.209
Attention index	108.8 ± 14.5	109.3 ± 14.7	0.5	–31, 32	0.05	0.293

RBANS, Repeatable Battery for the Assessment of Neuropsychological Status; SD, standard deviation. P-values were calculated by paired t-tests.