Subsequently, Spearman’s rank correlation test was performed to investigate whether there were correlations among serum concentration, age, and body mass index (BMI; Table 3). We found a
significant correlation between BMI and OA or DGLA concentrations in men (OA: r = 0.6818, p < 0.05; DGLA: r = 0.8000, p < 0.01), while no significant correlations were observed in women.