Table 1.

Association between percentages of arachidonic acid (dependent variable) and oleic acid (independent variable under investigation), as influenced by other variables, multiple linear regression

	Model	B (SE)	Beta	t	p
1	No adjustment	−0.69 (0.16)	−0.54	−4.2	0.003
2	Model 1 + sex + age + body mass index	- 0.55 (0.17)	−0.43	−3.2	<0.001
3	Model 2 + the other fatty acids measured	- 0.88 (0.05)	−0.69	−17.6	<0.001

Dependent variable = % 20:4 n6. B = unstandardized regression coefficient, Beta = standardized coefficient. Model 1 is without adjustment; Model 2 = Model 1 + adjustment for sex, age, and body mass index (BMI); Model 3 = Model 2 + control for relative amount of all of the other fatty acids measured (see Methods).