Table 2.

Within-subject mean and standard deviation (s_w) and Kendall rank correlation coefficient (Kendall τ) values for Neurotrack Cognitive Battery (NCB) assessments (n=31 participants).

NCB assessment	Within-subject mean	s w	Kendall’s τ	95% CI
Path pointsa	13.47	0.27	–0.42	2.48-3.57
Symbol matchb	29.80	4.32	–0.02	3.54-5.10
Arrow matchc	1.51	0.15	0.15	0.12-0.17
Light reactiond	476.69	52.25	–0.11	42.53-61.96
Item pricee	0.74	0.08	–0.20	0.07-1.00

^aScore is measured in seconds.

^bScore is the sum of correct response minus the sum of incorrect responses.

^cScore is the number of correct responses per second.

^dScore is measured in milliseconds.

^eScore is the mean accuracy of responses.