Prevalence of hyper-U-β2M and hyper-U-NAG corresponding to U-Cd intervals among subjects from county A (CA) and county B (CB) at different cadmium exposure levels1.

1The 90th percentiles of U-β2M and U-NAG of the control group were assumed as the thresholds of hyper-U-β2M and hyper-U-NAG, respectively.2U-Cd intervals were divided according to the three corresponding quartiles (i.e., Q1 = 2.38 µg/g cr, Q2 = 4.47 µg/g cr, and Q3 = 8.59 µg/g cr in CA; and Q1 = 1.16 µg/g cr, Q2 = 2.86 µg/g cr, and Q3 = 6.88 µg/g cr in CB).U-β2M, urinary level of β2-microglobulin; U-NAG, urinary level of N-acetyl-β-D-glucosaminidase; U-Cd, urinary level of cadmium.Prevalence of hyper-U-β2M and hyper-U-NAG corresponding to U-Cd intervals among subjects from county A (CA) and county B (CB) at different cadmium exposure levels1.