Table 1.

Demographic and clinical characteristics

Characteristics	Alcohol-dependent patients	Healthy controls	Statistics	P value
Number of subjects	19	20
Age (years)	38.7 ± 7.8 (range: 21–51)	42.9 ± 11.5 (range: 24–55)	t = 1.30	0.20b
Daily alcohol intake (ml)a	497.1 ± 132.8	–
Dependence duration (years)a	14.6 ± 7.2	–
Abstinence time of hospitalization (days)a	34.6 ± 23.6	–

The data are shown as the mean ± SD

^aThe data are available for 17 from 19 patients

^bThe P value was obtained by two-sample t-test