Table 2.

Multivariate regression analysis between lipid metabolites and sex, season, age, and body mass index (BMI) for all data from men and women and in summer and winter.

		All, n = 92
		Univariate regression		Multivariate regression
Dependent variables	Independent variables	r	P	B	Standardized β	P
Androgen	Sex	0.868	<0.001	0.009	0.926	<0.001
	Season	−0.119	2.5 × 10−1	−0.001	−0.109	2.4 × 10−2
	Age	−0.218	3.7 × 10−2	–	–	–
	BMI	0.153	1.5 × 10−1	−0.0003	−0.203	9.7 × 10−5
DG(36:1)	Sex	0.454	5.3 × 10−6	0.004	0.221	1.2 × 10−2
	Season	0.19	7.0 × 10−2	–	–	–
	Age	0.078	4.6 ×10−1	–	–	–
	BMI	0.391	1.2 ×10−4	0.002	0.527	2.5 × 10−8
PE(46:2)	Sex	−0.222	3.3 × 10−2	–	–	–
	Season	−0.058	5.8 × 10−1	–	–	–
	Age	0.214	4.0 × 10−2	0.00004	0.234	1.1 × 10−2
	BMI	−0.471	2.2 × 10−6	−0.0002	−0.514	1.7 × 10−7

Androgens testosterone, androstanedione, dehydroandrosterone, dehydroepiandrosterone, or epitestosterone, DG diacylglycerol, PE phosphatidylethanolamine.