Table 2.

Correlation between Autosomal Dominant (AD) pattern of geneticCYP2E1 gene and NPC phenotype

CYP2E1	Frequency		RR (AD)	95%CI
	Cases	Controls
Total
+ / +	138	189	1.00
+ / - and - / -	79	108	1.00	0.68 - 1.47
Thai
+ / +	93	70	1.00
+ / - and - / -	39	29	1.01	0.55 - 1.87
Chinese
+ / +	27	43	1.00
+ / - and - / -	29	55	0.84	0.41 - 1.71

+, The allele could be digested with RsaI enzyme -, The allele could not be digested with RsaI enzyme