Polymorphisms of glutathione S-transferase genes and survival of resected hepatocellular carcinoma patients

Table 1 Demographic and clinical characteristics of hepatocellular carcinoma patients

Variable	Our cohort		Hong Kong cohort
	n	%	n	%
Total	214	100	401	100
Age (yr)
≤ 55	108	50.5	NA	NA
> 55	106	49.5	NA	NA
Gender
Male	176	82.2	322	80.3
Female	38	17.8	79	19.7
Smoking behavior
Yes	70	32.7	223	55.6
No	144	67.3	178	44.4
Cirrhosis
Present	126	58.9	229	57.1
Absent	88	41.1	172	42.9
Child-Pugh score
A	172	80.4	390	97.3
B	42	19.6	11	2.7
AFP level (ng/mL)
< 200	100	46.7	NA	NA
≥ 200	114	53.3	NA	NA
Tumor size
< 5 cm	102	47.7	NA	NA
≥ 5 cm	112	52.3	NA	NA
TNM stage
I + II	119	55.6	177	44.1
III	95	44.4	224	55.9
Outcome
Dead	111	51.9	272	67.8
Alive	103	48.1	129	32.2