Table 4

Total leucocyte, neutrophil, and lymphocyte blood counts at baseline per μl in 237 cigarette smokers according to pack years and daily cigarette consumption

	No.	Total leucocytes	Neutrophils	Lymphocytes
Pack years consumption^4-151⩽20	100	7.4 (7.0 to 7.8)^4-150	4.3 (4.0 to 4.6)^**	2.4 (2.2 to 2.5)^4-150
Pack years consumption^4-151>20	137	8.1 (7.8 to 8.4)	4.8 (4.6 to 5.1)	2.6 (2.5 to 2.7)
Daily cigarette consumption^4-151 ⩽20	119	7.6 (7.3 to 7.9)^4-150	4.5 (4.2 to 4.7)^4-150	2.3 (2.1 to 2.5)^4-150
Daily cigarette consumption^4-151 >20	179	8.5 (8.0 to 9.2)	5.3 (4.8 to 5.9)	2.5 (2.4 to 2.7)

Values are given as geometric means (95% confidence limits).
↵4-150 p<0.05; ^**0.05<p<0.1.
↵4-151 See text for definition.