Table 3.

Descriptive statistics and test of significance for the relationships between the frequency of smoking and total and differential WBC counts

Cell counts (103/µL)	Group	Minimum	Maximum	Mean	± SE	P value
WBC*	Light	4.54	10.32	6.22	0.33	0.368NS
	Moderate	3.11	9.39	7.10	0.47
	Heavy	4.31	9.44	7.09	0.83
	Very heavy	4.64	8.32	6.25	0.55
Neutrophils*	Light	1.36	4.84	2.83	0.21	0.187NS
	Moderate	0.99	5.37	3.62	0.31
	Heavy	1.73	5.21	3.25	0.63
	Very heavy	1.94	4.43	2.80	0.42
Lymphocytes*	Light	1.71	4.41	2.64	0.15	0.669NS
	Moderate	1.49	3.80	2.58	0.17
	Heavy	2.01	3.65	2.93	0.24
	Very heavy	2.04	2.83	2.49	0.13
Monocytes*	Light	0.24	0.83	0.51	0.03	0.385NS
	Moderate	0.25	0.85	0.60	0.05
	Heavy	0.36	0.86	0.62	0.09
	Very heavy	0.36	0.70	0.54	0.05
Eosinophils**	Light	0.04	0.78	0.20	0.03	0.364NS
	Moderate	0.04	1.08	0.28	0.07
	Heavy	0.12	0.47	0.27	0.05
	Very heavy	0.16	1.30	0.39	0.18
Basophils**	Light	0.01	0.07	0.03	0.00	0.578NS
	Moderate	0.01	0.09	0.03	0.01
	Heavy	0.02	0.06	0.03	0.00
	Very heavy	0.01	0.03	0.02	0.00

*ANOVA one-way test was used for the significance test

**Kruskal–Wallis test was used for the significance test

SE standard error, NS not significant (P > 0.05)

Number of subjects: light = 22, moderate = 16, heavy = 6, and very heavy = 6