Table 1.

Essential demographic parameters (mean and SD) of the included study.

Demographic variables and related statistics
	Females	Males	Significance	Female non-smokers	Male non-smokers	Significance	Female smokers	Male smokers	Significance	Female ex-smokers	Male ex-smokers	Significance
Cases	29	23	–	9	8	–	10	8	–	10	7	–
Age	28.87 ± 0.99	31.87 ± 1.56	P = 0.1	27.19 ± 4.2	33.41 ± 4.2	P = 0.06	28.31 ± 5.7	29.84 ± 5.2	P = 0.29	30.93 ± 6.3	29.58 ± 4.6	P = 0.67
Years of smoking	9.06 ± 1.1	12.83 ± 2.35	P = 0.11	–	–	–	10.43 ± 4.4	10.3 ± 5.5	P = 0.28	8 ± 4.3	9.8 ± 5.1	P = 0.52
Cigarettes a day	12.22 ± 0.95	14.11 ± 1.32	P = 0.26	–	–	–	11.89 ± 2	10.7 ± 5.2	P = 0.34	12.56 ± 5.5	11.75 ± 2.4	P = 0.78
Years of abstinence	4.20 ± 1.04	2.50 ± 0.86	P = 0.35	–	–	–	–	–	–	4.2 ± 3.2	2.5 ± 1.7	P = 0.35
Rating scores	33.84 ± 4.89	32.18 ± 7.67	P = 0.85	11.12 ± 15.7	9.862 ± 13	P = 0.85	60.4 ± 17.2	74 ± 10.1	P = 0.17	30 ± 19.8	35 ± 23.2	P = 0.69