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Table 3 Bivariate correlation analyses of the result on the questions about sleep on chosen biomarkers

From: The importance of cardiorespiratory fitness and sleep duration in early CVD prevention: BMI, resting heart rate and questions about sleep patterns are suggested in risk assessment of young adults, 18–25 years

  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
  1. 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
  2. Levels of significance were set to P < 0.05 = *, P < 0.01 = ** or P < 0.001 = *** and NS, not significant