Table 1.

Distribution of Selected Characteristics among Lung Cancer Patients and Healthy Controls

Variable	Lung Cancer patients (%)	Healthy Controls (%)
Study population
Total No.	80	80
Tabuk	20	20
Jordan	60	60
Gender
Males	58 (72.5)	53 (66.25)
Females	22 (27.5)	27 (33.75)
Smoking status
Non-Smokers	26 (32.5)	80 (100.0 %)
Smokers	54 (67.5)	0 (0.0 %)
Age at diagnosis (Years)
Mean +SD age (Y)	57.6 + 11.49	26.8+ 4.01
	(range, 28-87 Years)	(range, 21- 40 Years)
Histological type
ADC*	60 (75.0)
SCC**	20 (25.0)
TNM Stage
I	2 (2.5)
II	7 (8.75)
III	26 (32.5)
IV	46 (57.5)
Distant metastases
No	35 (43.75)
Yes	45 (56.25)
Histological grade
Grade 1	2 (2.5)
Grade 2	33 (41.25)
Grade 3	23 (28.75)

^*ADC- adenocarcinoma,

^**SCC-squamous cell carcinoma