. Author manuscript; available in PMC: 2019 Nov 1.

Published in final edited form as: Neurobiol Learn Mem. 2018 Jun 5;155:1–6. doi: 10.1016/j.nlm.2018.06.002

Table 2.

Participant Characteristics by Condition.

	Immediate Test (n=18)		4hr Delay Test (n=18)
	mean	±SD	mean	±SD	t/χ²	p
Age (yrs)	20.5	1.10	19.3	1.31	3.0	.01^*
ESS	7.28	3.21	9.62	3.05	−2.2	.03^*
SSS	2.56	.86	2.89	.86	−.95	.35
Baseline MST	23.5	7.3	20.5	3.49	1.6	.13
Sex (% male)	39%		24%		.96	.47
% Play Instrument	44%		41%		.04	1.0

Notes. P-values derived from independent-samples t-tests (with the exception of chi square tests for sex and instruments) comparing the immediate test and 4hr delay groups.

p < .05.

SSS=Stanford Sleepiness Scale; ESS=Epworth Sleepiness Scale; MST=Motor Sequence Task.