Table 2.

Association between smoking status and CBC parameters (adjusted for age and sex)

Groups	No smoker (n: 6742)	Ex-smoker (n: 976)	Cigarette smoking (n: 864)	Hookah smoking (n: 1067)	Cigarette and hookah (n: 41)	p value
WBC (×103/µl)	5.95 ± 1.46	6.16 ± 1.58a	6.97 ± 1.98ab	6.05 ± 1.51ac	6.58 ± 1.86ad	< 0.001
RBC (×106/µl)	4.82 ± 0.47	4.95 ± 0.57	5.04 ± 0.49ab	4.8 ± 0.47abc	4.93 ± 0.84d	< 0.001
Hb (mg/dl)	13.57 ± 1.53	14.14 ± 1.46a	14.76 ± 3.01a	13.42 ± 1.61b	14.16 ± 2.22	< 0.001
HCT (%)	40.81 ± 5.32	42.37 ± 4.56	43.79 ± 3.67a	40.52 ± 3.99a	42.41 ± 7.14	0.001
MCV (fl)	84.61 ± 6.09	85.49 ± 5.78a	86.96 ± 5.64ab	84.47 ± 5.95bc	86.19 ± 3.78	< 0.001
MCH (pg)	28.24 ± 2.73	28.6 ± 2.23	29.16 ± 2.24ab	27.98 ± 2.68c	28.67 ± 1.74	< 0.001
MCHC (g/dl)	33.23 ± 1.65	33.3 ± 1.43	33.49 ± 1.25	33.07 ± 1.57	33.32 ± 1.11	0.065
PLT (×103/µl)	231.43 ± 60.29	227.37 ± 53.12a	210.85 ± 51.48b	238.55 ± 68.78c	236.31 ± 67.15c	0.004
RDW (%)	41.42 ± 3.18	41.92 ± 3.11a	42.83 ± 3.14ab	41.9 ± 3.33ac	42 ± 2.56	< 0.001

Values expressed in mean ± SD

^αNo-smoker vs ex-smoker, cigarette, hookah

^bEx-smoker vs cigarette, hookah

^cCigarette vs hookah