Table 2.

FFA subtypes independently associated with complex lipid subclasses of TAGs, DAGs, and PEs using multiple linear regression models adjusted for age, sex, and race

Complex Lipid Subclasses (Dependent Variable)	Independent FFA Associates	B	SEM	r	P Value
Short, low double-bond TAG	Length ≤ C-20	−0.25	0.089	−0.19	<0.01
Long, low double-bond TAG	Length ≤ C-20	−0.754	0.128	−0.58	<0.001
Long, low double-bond TAG	Length ≤ C-20	0.660	0.135	0.48	<0.001
Short, low double-bond DAG	Length ≤ C-20	−0.221	0.089	−0.17	0.01
Intermediate-length, low double-bond PE	Length ≤ C-20	−0.219	0.089	−0.17	0.02
Long PE	Length ≤ C-20	0.458	0.087	0.33	<0.001

Short FFA is defined as ≤20 carbons, and long is defined as >20 carbons. Complex lipid subclasses as well as FFA cutoffs for acyl-chain length are defined by PCA. Acyl chain >20 carbons is indicated as >C-20, and acyl chain ≤20 is indicated as ≤C-20.