Figure 3.

Risk of primary cardiac arrest associated with red blood cell membrane levels of long-chain n-3 polyunsaturated fatty acids (PUFAs). Quartile means are from control subjects. Odds ratios (ORs;) and 95% CIs (bars) were from a conditional logistic model that included the linear term for red blood cell membrane long-chain n-3 PUFAs after adjustment for age, current smoking, former smoking, family history of myocardial infarction or sudden death, fat intake scale, hypertension, diabetes mellitus, physical activity level, weight, height, and education. ORs and 95% CIs were calculated by using the lowest quartile as the reference group and the mean value for each category. Reproduced with permission by the American Journal of Clinical Nutrition. ©Am J Clin Nutr. American Society for Clinical Nutrition. (33) www.ajcn.org/content/vol71/issue1/images/large/020802.jpeg