Table 2. Baseline socio-demographic and behavioural variables associated with frequent cocaine injection (n = 1603).

Variable	Not Freq. Cocaine Inject	Freq. Cocaine Inject	Odds Ratio (95% CI)	p-value
	n = 1054 (%)	n = 549 (%)
Sex
Female	361 (34)	223 (41)	1.31 (1.06 – 1.62)	0.012
Male	693 (66)	326 (59)
Age
Median (IQR)	33 (24-40)	33 (26 – 40)	1.00 (0.99 – 1.01)	0.834
Ethnicity
Aboriginal	270 (26)	162 (30)	1.25 (0.99 – 1.58)	0.058
Other	784 (74)	384 (70)
DTES residence*
Yes	550 (52)	369 (67)	1.88 (1.51 – 2.33)	< 0.001
No	504 (48)	180 (33)
Unstable housing*
Yes	602 (57)	395 (72)	1.93 (1.54 – 2.41)	< 0.001
No	452 (43)	154 (28)
Incarceration*
Yes	318 (30)	218 (40)	1.52 (1.23 – 1.89)	< 0.001
No	736 (70)	331 (60)
Syringe borrowing*
Yes	378 (36)	212 (39)	1.13 (0.91 – 1.39)	0.278
No	676 (64)	337 (61)
Syringe lending*
Yes	356 (34)	216 (39)	1.27 (1.03 – 1.57)	0.027
No	698 (66)	333 (61)
Require help injecting*
Yes	439 (42)	228 (42)	1.00 (0.81 – 1.23)	0.963
No	615 (58)	321 (58)
Binge drug use*
Yes	478 (45)	294 (54)	1.39 (1.13 – 1.71)	0.002
No	572 (55)	255 (46)
Sex trade involved*
Yes	259 (25)	201 (37)	1.77 (1.42 – 2.22)	< 0.001
No	795 (75)	348 (63)

^*Refers to previous six months, DTES = Downtown Eastside Residence, Freq. = frequent.