Table 4.

The estimated reference values and the mean of the sum of concentrations of lipid species showing positive and negative association with body mass index and lipid species ratio.

	Reference Value	BMI < 25 kg/m2	BMI ≥ 30 kg/m2	p Value
		Mean ± SD	Mean ± SD
Sum of the concentration of lipid molecules showing positive association with BMI	<2.15 µmol/L	1.54 + 0.76	2.73 + 0.73	<0.001
Sum of the concentration of lipid molecules showing negative association with BMI	≥71.43 µmol/L	83.92 + 22.33	63.38 + 21.55	<0.001
Lipid species ratio	<0.03	0.02 + 0.01	0.05 + 0.03	<0.001