Table 4.

Intraclass Correlation Coefficients (ICC) and Pearson Correlation Coefficients for the NIH Toolbox Cognition Battery and the Neuropsychological Battery

Cognitive Domain	Corrected Scores			Uncorrected Scores
	ICC Absolute (95% CI)	ICC Consistency (95% CI)	Pearson r	ICC Absolute (95% CI)	ICC Consistency (95% CI)	Pearson r
Attention & Executive Function	0.314 (0.108, 0.495)	0.336 (0.127, 0.517)	0.349**	0.260 (0.045, 0.452)	0.260 (0.044, 0.453)	0.307*
Episodic Memory	0.189 (−0.028, 0.388)	0.187 (−0.028, 0.386)	0.190	0.213 (0.013, 0.401)	0.241 (0.028, 0.434)	0.242
Working Memory	0.515 (0.337, 0.658)	0.530 (0.356, 0.669)	0.530**	0.520 (0.198, 0.712)	0.608 (0.453, 0.728)	0.618**
Processing Speed	0.187 (−0.028, 0.386)	0.187 (−0.029, 0.386)	0.199	0.298 (0.091, 0.480)	0.329 (0.124, 0.508)	0.339*
Language	0.785 (0.668, 0.861)	0.801 (0.708, 0.829)	0.801**	0.441 (0.048, 0.677)	0.573 (0.408, 0.701)	0.758**
Motor Dexterity	0.483 (0.300, 0.631)	0.496 (0.315, 0.642)	0.507**	0.397 (0.201, 0.563)	0.412 (0.215, 0.576)	0.486**

Note. ICC – Intraclass correlation coefficient, CI – Confidence interval.

^*P < 0.01

^**P < 0.001. The results were similar when participants who reported English as a second language were removed from the analyses.