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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Psychol Addict Behav. 2012 May 28;27(1):307–314. doi: 10.1037/a0028445

Table 4.

SIP-R Total Score Differences

SIP-R Total Score
Variable Mean sd F p
Gender 17.91 <.001
 Male 21.4 13.9
 Female 25.4 12.7
Race/Ethnicity 1.61 ns
 Caucasian 22.7 13.5
 African Am 23.7 13.4
 Hispanic 22.7 15.5
 Multiracial 22.4 13.2
 Other 15.0 14.9
Primary drug 51.86 <.001
 Alcohol 20.1 13.0
 Cocaine 30.1 11.4
 Marijuana 12.4 10.7
 Opioids 29.2 12.2
Methamphetamine 27.6 11.3
 Other 30.4 11.5
Legally mandated 190.61 <.001
 No 28.1 11.7
 Yes 16.5 13.0