Table-III.

Stratification analysis on the association between rs699947 and rs2010963 and demographic characteristics in osteosarcoma risk.

Variables	ERCC2 rs1799793		OR(95%CI)	P	NBN rs1805794		OR(95%CI)	P
	Cases/Controls				Cases/Controls
	GG	GA+AA	GA+AA vs GG		GG	GC+CC	GC+CC vs GG
Gender
Male	58/124	33/57	1.23(0.71-2.17)	0.43	35/74	56/107	1.11(0.64-1.92)	0.7
Female	26/77	31/38	2.42(1.20-4.87)	0.007	17/53	40/62	2.01(1.07-4.23)	0.04
Age
<20	53/34	119/45	1.70(0.94-3.05)	0.06	31/69	56/95	1.31(0.74-2.34)	0.32
≥20	31/82	30/50	1.59(0.82-3.06)	0.14	21/58	40/74	1.49(0.76-2.97)	0.21
Family history of cancer
Positive	11/28	24/35	1.75(0.68-4.64)	0.21	9/15	26/48	0.90(0.32-2.68)	0.83
Negative	73/173	40/60	1.58(0.94-2.63)	0.06	43/112	70/121	1.51(0.93-2.45)	0.08