Table 3.

Bivariate correlation analyses of the result on the questions about sleep on chosen biomarkers

	Pearson’s correlation coefficient (r)	Sleep in hours per night Significance	Pearson’s correlation coefficient (r)	Quality of sleep Significance
BMI (kg/m2)	0.148	**	0.047	NS
Body fat (%)	0.077	*	0.023	NS
HDL cholesterol (mmol/L)	−0.053	NS	−0.004	NS
LDL cholesterol (mmol/L)	−0.007	NS	−0.001	NS
Resting HR (beats/min)	0.018	NS	0.035	NS
MAP (mmHg)	0.063	NS	−0.008	NS
HOMA-IR	0.079	*	0.022	NS
Risk for CVD - Wildman	0.092	**	0.031	NS

BMI body mass index, Body fat (%)percentage of body fat, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, Resting HR resting heart rate, beats/min, MAP mean arterial pressure, HOMA-IR homeostasis model assessment of insulin resistance and Risk for CVD cardiovascular disease

Levels of significance were set to P < 0.05 = *, P < 0.01 = ** or P < 0.001 = *** and NS, not significant