. 2023 Sep 26;95(3):1233–1252. doi: 10.3233/JAD-221297

Table 4.

Group differences in continuous tapping metrics

		MCI versus Controls			AD versus Controls
Condition	Tapping Measure	beta	p	η ²	beta	p	η ²
Dominant	Initial Reaction Time (s)	0.16	0.093	0.03	0.24	0.011	0.06
	Taps per Second	–0.01	0.974	0.00	–0.30	0.108	0.03
	Taps per Second Variance	0.00	1.00	0.02	0.01	0.003	0.08
Non-Dominant	Initial Reaction Time (s)	0.46	0.006	0.07	0.57	0.001	0.11
	Taps per Second	–0.14	0.523	0.00	–0.42	0.047	0.04
	Taps per Second Variance	0.01	0.019	0.05	0.01	0.009	0.06
Dual Tapping	Initial Reaction Time (s)	0.49	<0.001	0.12	0.19	0.152	0.02
	Unpaired Taps Rate^a	0.00	1.00	0.00	0.00	0.758	0.00
	Taps per Second	–0.30	0.425	0.01	–0.79	0.039	0.04
	Taps per Second Variance	0.01	0.002	0.09	0.01	0.014	0.05
	Tap Pair Duration (s)	0.00	0.129	0.02	0.00	0.228	0.01
	Tap Pair Duration Variance (s)	0.00	0.385	0.01	0.00	0.548	0.00
	Number of Pairs	–1.68	0.402	0.01	–4.28	0.035	0.04
Alternating	Initial Reaction Time (s)	0.17	0.097	0.01	0.40	<0.001	0.14
	Error Rate^b	0.00	0.548	0.00	0.00	1.00	0.00
	Taps per Second	0.31	0.414	0.01	–0.83	0.033	0.04
	Taps per Second Variance	0.00	0.14	0.02	0.01	<0.001	0.15
	Alternating Transition Time (s)^c	–0.01	0.619	0.00	0.02	0.077	0.03
	Alternating Transition Time Variance (s)^c	0.00	0.782	0.00	0.01	0.058	0.03
	Alternating Transitions^c	3.61	0.35	0.01	–8.31	0.033	0.04

All metrics are calculated from the median values over the subjects’ completed trials; ^anumber of unpaired taps divided by total number of taps; ^bnumber of incorrect transitions (i.e., left-to-left tap, or right-to-right tap) divided by the number of taps; ^cApplies to correct transitions only (i.e., left-to-right tap and right-to-left tap transitions). Values printed in bold indicate tests that retain significance after FDR correction.