Table 1.

Demographic and key risk behavior characteristics of male injecting drug users enrolled into a longitudinal cohort study in Kabul, Afghanistan (N = 483)

Continuous Variables	Mean	Median	IQR
Age (years)	29.6	28	24-33
Level of education (years)	5.3	5	0-7
Age initiated injecting (years)	25.8	24	21 - 29
Duration of injecting (years)	4.0	2	1 - 6
Number of daily injections	5.7	6	5 - 6
Dichotomous Variables	N		%
Ever married	224		46.4
Born in Afghanistan	418		87.1
Lived outside Afghanistan in last 5 years	310		64.7
Employed at enrollment	56		11.7
Prior incarceration	302		63.1
Initiated drug use with injecting	39		8.1
Initiated injecting in the last year	111		23.0
Initiated injection inside Afghanistan	321		66.5
Ever shared needles/syringes	81		16.9
Shared needles/syringes in last 3 months	31		6.4
Ever shared injecting equipment	189		38.4
Shared injecting equipment in last 3 months	132		27.3
Ever inject/re-aspirate blood (khoon bozee)	337		70.2
Prior addiction treatment	70		14.6
Ever paid woman for sex*	177		40.4
Ever had sex with another male*	49		11.1
Ever used condom*	49		11.1

*Of 443 participants ever reporting previous sexual activity.

N = Number

IQR- Interquartile Range