Table 1.

Demographic and drug use characteristics between groups of subjects with and without MA craving.

Characteristic (Mean ± SD)	Subjects with MA craving (n = 78)	Subjects without MA craving(n = 64)	P-value
Demographics
Age (years)	29.0 ± 5.17	29.4 ± 5.91	0.64*
Education (years)	11.8 ± 2.63	11.6 ± 2.58	0.70*
Male/Female, No.	68/10	56/8	0.95#
MA Use and smoking characteristic
Craving scores	2.4 ± 2.61	0
Age of first MA use (years)	23.7 ± 7.10	24.4 ± 6.21	0.39*
Smoking duration (years)	11.5 ± 4.78	11.8 ± 6.45	0.71*
Cigarettes smoked per day	20.5 ± 10.04	19.0 ± 10.39	0.38*

^#Indicates p-values for Chi-squared test.

^*Indicates p-values for two-sample t-tests.

SD, standard deviation.