Fig. 4

Dose-response relationship between ω-3 and ω-6 fatty acids intake and cognitive functioning in Digit Symbol test. The association was adjusted for age, gender, race, educational level, marital status, income, BMI, recreational activity, work activity, drinking status, hypertension, diabetes and stroke. The solid line and dash line represent the estimated ORs and its 95% confidence intervals. (OR, odds ratio)