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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Drug Alcohol Depend. 2018 Mar 27;187:1–7. doi: 10.1016/j.drugalcdep.2018.01.034

Table 1.

Demographic and methamphetamine use variables for the study sample (N = 177)

Variable Mean (SD) Frequency (%)

Age 35.44 (8.8)
Sex (Male) 127 (71.5%)
Ethnicity
 Caucasian 54 (30.5%)
 African American 39 (22.0%)
 Asian 5 (2.8%)
 Latino 57 (32.2%)
 Native American 1 (0.6%)
 Multiple Ethnicities 20 (11.3%)
Education (years) 12.64 (3.0)
Age of First Use 22.79 (7.9)
Years of MA Use 12.53 (8.6)
Met Criteria for Abuse Only 17 (9.6%)
Met Criteria for Dependence Only 35 (19.8%)
Met Criteria for Abuse & Dependence 115 (65.0%)
Met No Diagnosis 2 (1.1%)
Diagnostic Orphan 8 (4.5%)
Average Symptom Count 5.90 (2.4)
Symptom Count
  0 2 (1.1%)
  1 4 (2.3%)
  2 7 (4.0%)
  3 23 (13.0%)
  4 16 (9.0%)
  5 25 (14.1%)
  6 24 (13.6%)
  7 27 (15.3%)
  8 22 (12.4%)
  9 16 (9.0%)
  10 7 (4.0%)
  11 4 (2.3%)
Days of MA Use in Past 30 Days 19.0 (8.8)
MA Use Questionnaire 17.36 (11.5)
MA Withdrawal Questionnaire 15.27 (11.5)
Beck Depression Inventory 13.50 (10.2)
Beck Anxiety Inventory 9.84 (10.2)
Primary Route of Administration
 Smoke 110 (74.8%)
 Inject 10 (6.8%)
 Snort 23 (15.6%)
 Ingest 4 (2.7%)
Fagerstrom Test of Nicotine Dependence 5.54 (2.5)