Table 1.

Demographic and drug use characteristics of IPE and CPE IDUs.

	IPE IDUs (n = 261) N (%)	CPE IDUs (n = 1153) N (%)
Gender
Non-MSM males	166 (64)	817 (71)
MSM males	15 (6)	60 (5)
Females	80 (31)	276 (24)
Race/ethnicity
White	74 (28)	333 (30)
Black	27 (10)	137 (12)
Hispanic	154 (59)	639 (58)
Other	5 (2)	44 (4)
Age*
<40 years of age	247 (95)	988 (86)
40 or older	14 (5)	165 (14)
Injection drug
Heroin*	225 (86)	1074 (93)
Cocaine*	166 (64)	439 (38)
Speedball*	198 (76)	509 (44)
Non-injection drug
Intranasal heroin*	100 (38)	519 (45)
Crack cocaine*	126 (48)	403 (35)
Daily injection	205 (79)	944 (82)
Avg. age at first injection†	25 (6)	28 (8)
Avg. years of injection†	4.2 (3)	3.5 (3)

The comparison is for each demographic/drug use characteristic across IPE and CPE periods.

^*Significant difference by chi-square test (p < 0.01).

^†Significant difference by t-test (p < 0.01).