Table 4.

Estimated change in leukocyte cell type proportions by blood and urinary total arsenic concentrations.

Exposure	CD8+ T cells	CD4+ T cells	NK cells	B cells	Monocytes	Granulocytes
Blood arsenic concentration (μg/L)
0.80–2.50	Reference	Reference	Reference	Reference	Reference	Reference
2.51–4.79	0.39 (–1.09, 1.87)	–0.57 (–1.59, 0.44)	0.05 (–0.06, 0.15)	–0.46 (–1.18, 0.26)	0.04 (–0.47, 0.55)	0.55 (–1.16, 2.26)
4.80–11.20	1.02 (–0.43, 2.47)	–0.30 (–1.29, 0.70)	0.02 (–0.08, 0.12)	–0.39 (–1.09, 0.32)	–0.05 (–0.54, 0.45)	–0.31 (–1.99, 1.37)
11.21–81.60	0.47 (–0.97, 1.90)	–0.75 (–1.74, 0.24)	–0.08 (–0.18, 0.02)	–0.41 (–1.11, 0.29)	0.15 (–0.34, 0.64)	0.61 (–1.05, 2.28)
Urinary total arsenic concentration (μg/g)
12.0–75.0	Reference	Reference	Reference	Reference	Reference	Reference
75.1–139.9	0.37 (–1.08, 1.81)	–0.72 (–1.71, 0.28)	–0.08 (–0.18, 0.02)	–0.31 (–1.01, 0.39)	0.25 (–0.24, 0.75)	0.49 (–1.18, 2.16)
140.0–394.9	1.21 (–0.27, 2.69)	–0.47 (–1.50, 0.55)	–0.02 (–0.13, 0.08)	–0.35 (–1.07, 0.37)	0.20 (–0.31, 0.70)	–0.56 (–2.28, 1.15)
395.0–2250.0	0.99 (–0.47, 2.45)	–1.18 (–2.19, –0.17)*	–0.12 (–0.22, –0.01)*	–0.68 (–1.39, 0.03)	0.18 (–0.32, 0.68)	0.81 (–0.88, 2.50)
*p < 0.05.