. 2006 Apr 19;7:38. doi: 10.1186/1471-2350-7-38

Table 4.

Results of stepwise multiple logistic regression analysis for the GSTT1 genotype (variable): final significant variables in the model

Risk Factor (variables)	Odds ratio	[95% C.I]	pvalue
GSTT1 Genotype (T^wildvs. T^null)	6.24	4.49 – 8.67	< .001
Hypertension	3.11	2.19 – 4.44	< .001
Hypercholesterolemia	1.57	1.22 – 2.02	< .001
Obesity	2.10	1.61 – 2.73	< .001
Smoking	1.96	1.45 – 2.64	< .001

GSTT1 genotype × smoking interaction was entered jointly into the multiple logistic regression analysis. Other factors were entered disjointedly. After analysis, the genotype × smoking interaction was not retained in the model and therefore is not shown in the above table.