Comparison of RLP using multivariable linear mixed-effect regression model, adjusted for age, sex and AL, using White as the reference group, showed that a significant different of RLP exists between ethnic cohorts. The highest negative effects (estimated difference) were seen in Hispanics (coefficient = -0.0062, 95% CI, -0.88 x10-2 to -0.36 x10-2, P<0.01) and after that in Asians (coefficient -0.0055, 95% CI, -0.72 x10-2 to -0.37 x10-2, P<0.01) as compared to White and the lowest negative effect (estimated difference) was seen in African-Americans as compared to White (coefficient = -0.0046, 95% CI, -0.76 x10-2 to -0.16 x10-2, P = 0.002).