Table 1

Demographic and clinical characteristics of methamphetamine dependents with zero and non-zero craving reports

	Zero craving (N=28)		Non-zero craving (N=24)		Statistical analysis	df	P values
	Mean	SD	Mean	SD	t		P values
Age	36.75	8.69	34.13	7.46	1.158	50	0.252
BIS	60.25	8.84	63.21	8.01	−1.256	50	0.215
Emotional stability	32.11	8.19	32.92	10.26	−0.316	50	0.753
Drink	1.46	0.51	1.46	0.51	0.042	50	0.967
Smoke	1	0	1	0
History	4.59	3.11	4.5	2.25	0.117	50	0.907
Maximum	0.61	0.61	0.69	0.42	−0.523	50	0.603
Weekly amount	1.92	2.59	2.12	1.56	−0.334	50	0.74

BIS, Barratt Impulsiveness Scale.