TABLE 2.

Associations of Healthy Eating Index 2015 diet score with representative metabolites and lipids

Cluster	Spectral features	Metabolite association	β1	SE	P
1	2.765603, 2.769304, 2.769641, 2.770313, 2.77065	C=CHCH2HC=C (fatty acyl chains)	0.08	0.02	8.98 × 10−7
2	3.100354, 3.10069, 3.101027, 3.101363	Proline betaine/histidine	0.12	0.02	4.70 × 10−13
3	3.268907	1,5-Anhydrosorbitol	−0.08	0.02	4.37 × 10−7
4	3.3261, 3.326437	Proline	−0.09	0.02	5.46 × 10−8
5	3.342249, 3.347968	Methanol/proline	−0.10	0.02	4.06 × 10−10
6	3.34494, 3.345277	Methanol/proline	−0.12	0.02	1.63 × 10−12
7	3.34595, 3.346286	Methanol/proline	−0.13	0.02	4.45 × 10−14

¹Standardized estimates: adjusted for age, sex, race, and study sites.