Table 1.

Demographic and clinical characteristic of breast cancer patients [24].

Variables	Breast cancer patients 100 (%)	Healthy controls 100 (%)
Age
≤50 years	54 (54)	60 (60)
>50 years	46 (46)	40 (40)
Menopause
Yes	67 (67)	64 (64)
No	33 (33)	36 (36)
Lymph nodes
Yes	44 (44)
No	56 (56)
ER status
Yes	31 (31)
No	69 (69)
PR status
Yes	28 (28)
No	72 (72)
Her2 status
Yes	40 (40)
No	60 (60)
TNM stages
Early stage (I & II)	38 (38)
Advanced stage (III & IV)	62 (62)
Distant metastases
Yes	24 (24)
No	76 (76)