Table 2. Correlations of the sleep variables.

	Night-time sleep duration	Daytime sleep duration	Sleep onset
Daytime sleep duration	−0.24^	—	—
Sleep onset	−0.32*	−0.02	—
Average number of awakenings	−0.31*	0.11*	0.19*

Pearson’s correlations were conducted for the correlation between night-time and daytime duration as these two variables were normally distributed. Spearman’s rho correlations were conducted for all remaining comparisons as sleep onset and average number of awakenings were not normally distributed.

^{^}Pearson’s r correlations, p < 0.01.

*Spearman’s rho correlations, p < 0.01.