Table 3. Peripheral blood cell counts and lymphocyte subsets in the controls and DEE exposed workers (mean ± SD).

	Control (n = 108)	DEE exposed workers (n = 137)	P crude  a	P adjust  b
White blood cells (109 per L)	6.61 ± 1.65	6.77 ± 1.67	0.45	0.82
Neutrophils (109 per L)	3.93 ± 1.29	4.10 ± 1.27	0.21	0.61
Eosinophils (109 per L)	0.14 ± 0.12	0.15 ± 0.13	0.34	0.28
Lymphocytes (109 per L)	2.24 ± 0.60	2.24 ± 0.64	0.83	0.29
T cell (109 per L)	1.49 ± 0.48	1.47 ± 0.45	0.80	0.22
CD4+ (109 per L)	0.76 ± 0.23	0.76 ± 0.26	0.88	0.24
CD8+ (109 per L)	0.63 ± 0.31	0.62 ± 0.25	0.89	0.42
B cells (109 per L)	0.25 ± 0.10	0.25 ± 0.12	0.58	0.20
NK cells (109 per L)	0.47 ± 0.23	0.46 ± 0.30	0.52	0.55
Monocytes (109 per L)	0.33 ± 0.15	0.31 ± 0.11	0.33	0.08
Hemoglobin (g per L)	163.6 ± 9.2	164.3 ± 10.1	0.60	0.89
Platelets (109 per L)	240.6 ± 58.7	234.9 ± 49.9	0.58	0.28

^a t-test for difference between the two groups.

^bAdjusted for age, smoking and alcohol status, and BMI.