borderline significantp-value = 0.08
The regression model for HDL (main effects only, Table 2 ) showed that 2,4-D was associated with a borderline significant 5% decrease of HDL when all available subjects were included (β-coefficient = -0.048, 95% CI [-0.101, 0.006], p-value = 0.08), and a significant 9% decrease for subjects in the lower 50% of T4 (β-coefficient = -0.09, 95% CI [-0.160, -0.016], p-value = 0.02).