Table 6.

Logistic regression analysis to test if sex ratio among patients (0 = male patients, 1 = female patients) can be modeled by rs1128503 genotype, histological grade, tumor localization, and age of diagnosis

Independent variable	B a	s.e. b	Wald c	d.f. d	P value	OR (95% C.I.)
rs1128503			9.52	2.00	0.01
CT vs CC	-2.22	0.72	9.51	1.00	0.00	0.11 (0.03–0.45)
TT vs CC	-1.45	0.67	4.67	1.00	0.03	0.24 (0.06–0.87)
Grade			5.27	2.00	0.07
G2 vs G1	-1.91	1.23	2.42	1.00	0.12	0.15 (0.01–1.65)
G3 vs G1	-1.33	0.61	4.75	1.00	0.03	0.26 (0.08–0.87)
Localization			1.18	2.00	0.55
sigma vs colon	0.61	0.61	1.02	1.00	0.31	1.85 (0.56–6.08)
rectum vs colon	0.68	0.75	0.83	1.00	0.36	1.98 (0.46–8.57)
Age	-0.01	0.02	0.23	1.00	0.63
Constant	2.54	1.63	2.43	1.00	0.12
Model	χ2 = 16.86 d.f. = 7 P = 0.018

^aregression coefficient.

^bstandard error.

^cWald test.

^ddegrees of freedom.