Kiri Patton1, Jason P Connor2, Sharyn Rundle-Thiele3, Timo Dietrich4, Ross McD Young5, Matthew J Gullo6. 1. Centre for Youth Substance Abuse Research, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD, Australia; School of Psychology, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD, Australia. Electronic address: kiri.patton@uqconnect.edu.au. 2. Centre for Youth Substance Abuse Research, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD, Australia; Discipline of Psychiatry, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia. 3. Social Marketing @ Griffith, Griffith Business School, Griffith University, Nathan, QLD, Australia. 4. Centre for Youth Substance Abuse Research, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD, Australia; Social Marketing @ Griffith, Griffith Business School, Griffith University, Nathan, QLD, Australia; Department of Marketing, Griffith Business School, Griffith University, Nathan, QLD, Australia. 5. Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, QLD, Australia; Faculty of Health, Queensland University of Technology, Kelvin Grove, QLD, Australia. 6. Centre for Youth Substance Abuse Research, Faculty of Health and Behavioural Sciences, The University of Queensland, Brisbane, QLD, Australia.
Abstract
BACKGROUND: This study aimed to develop and validate a shortened version of the Drinking Refusal Self-Efficacy Questionnaire-Revised Adolescent version (DRSEQ-RA) using a large sample of adolescents. METHODS: Secondary school students (N = 2609, M = 14.52 years, SD = 0.94) completed the DRSEQ-RA (consisting of subscales: Social Pressure; Opportunistic; Emotional Relief) and the Alcohol Use Disorders Identification Test (AUDIT). These data were analysed using non-parametric item response theory (NIRT) including Mokken scalability coefficients, and confirmatory factor analysis. RESULTS: Social Pressure subscale items were better able to distinguish between adolescents with lower or higher levels of drinking refusal self-efficacy, while the Opportunistic and Emotional Relief subscale items were able to distinguish adolescents with low drinking-refusal self-efficacy. The DRSEQ-RA was reduced from 19-items to a 9-item scale and retained the original three-factor structure. The reduced scale was named the Drinking Refusal Self-Efficacy Questionnaire-Shortened Revised Adolescent version (DRSEQ-SRA). The DRSEQ-RA and the DRSEQ-SRA have almost identical psychometric properties. They both demonstrated good fit to the data, each explained 18% of the variance in alcohol consumption, Adj. R2 = 0.18, p < .001 respectively. The DRSEQ-RA and the DRSEQ-SRA also have excellent scale and subscale internal reliability (αs = 0.92-0.99). CONCLUSIONS: The DRSEQ-SRA is a short, 9-item, measure of adolescent drinking-refusal self-efficacy which demonstrates both reliability and validity. A significant advantage is brevity. The DRSEQ-SRA may be a valuable tool for identifying risk of adolescent drinking and prevention/treatment planning in settings where survey administration time is critical.
BACKGROUND: This study aimed to develop and validate a shortened version of the Drinking Refusal Self-Efficacy Questionnaire-Revised Adolescent version (DRSEQ-RA) using a large sample of adolescents. METHODS: Secondary school students (N = 2609, M = 14.52 years, SD = 0.94) completed the DRSEQ-RA (consisting of subscales: Social Pressure; Opportunistic; Emotional Relief) and the Alcohol Use Disorders Identification Test (AUDIT). These data were analysed using non-parametric item response theory (NIRT) including Mokken scalability coefficients, and confirmatory factor analysis. RESULTS: Social Pressure subscale items were better able to distinguish between adolescents with lower or higher levels of drinking refusal self-efficacy, while the Opportunistic and Emotional Relief subscale items were able to distinguish adolescents with low drinking-refusal self-efficacy. The DRSEQ-RA was reduced from 19-items to a 9-item scale and retained the original three-factor structure. The reduced scale was named the Drinking Refusal Self-Efficacy Questionnaire-Shortened Revised Adolescent version (DRSEQ-SRA). The DRSEQ-RA and the DRSEQ-SRA have almost identical psychometric properties. They both demonstrated good fit to the data, each explained 18% of the variance in alcohol consumption, Adj. R2 = 0.18, p < .001 respectively. The DRSEQ-RA and the DRSEQ-SRA also have excellent scale and subscale internal reliability (αs = 0.92-0.99). CONCLUSIONS: The DRSEQ-SRA is a short, 9-item, measure of adolescent drinking-refusal self-efficacy which demonstrates both reliability and validity. A significant advantage is brevity. The DRSEQ-SRA may be a valuable tool for identifying risk of adolescent drinking and prevention/treatment planning in settings where survey administration time is critical.