Table 1.

Demographic and Clinical Characteristics.

Age, years Mean (SD)	32.7 (8.2)
Female N (%)	355 (51.5)
Ethnicity N (%)
Caucasian	430 (62.6)
Hispanic	81 (11.8)
Asian	48 (7.0)
Pacific Islander	45 (6.5)
Multiracial	45 (6.5)
Native American	15 (2.2)
African American	13 (1.9)
Other	10 (1.5)
Usual Route of methamphetamine administration N (%)
Smoking	419 (61.3)
Insufflation	169 (24.7)
Injection	83 (12.1)
Oral	13 (1.9)
Days of methamphetamine use, past 30 Days Mean (SD)	12.4 (9.7)
Years of lifetime methamphetamine use Mean (SD)	5.4 (5.1)