. Author manuscript; available in PMC: 2013 Apr 1.

Published in final edited form as: Addict Behav. 2011 Nov 29;37(4):393–398. doi: 10.1016/j.addbeh.2011.11.030

Table 1.

Demographic and drug use history for the two heroin-dependent groups

	RA group (n=27)	LA group (n=29)	x² or t	p
Age (years), mean(SD)	31.8(7.7)	35.1(7.1)	1.71	0.09
Female, n(%)	8(29.6)	11(37.9)	0.51	0.58
Education (years), mean(SD)	11.4(2.5)	10.7(2.2)	1.08	0.28
Marriage status
Married, n(%)	3(11.1%)	4(13.8%)
Divorce/separated, n(%)	8(27.6%)	10(37.0%)
Unmarried, n(%)	17(58.6%)	14(51.9%)
Onset age of drug use (years)	24.0(8.3)	23.9(8.1)	0.06	0.95
Injection drug use, n(%)	19(70.4%)	20(69.0%)	0.13	0.91
Average of drug abuse time (years)	5.7(3.7)	7.6(3.6)
Drug use days in last 30 days (days)	20.1(14.0)	23.3(10.6)	0.94	0.35
Abstinent from last heroin use (days)	17.1(3.3)	392.4(14.7)	132.5	<0.001