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Study Title and Description

Short-term effects of a brief motivational intervention to reduce alcohol and drug risk among homeless adolescents.



Key Questions Addressed
1 Evidence map
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Primary Publication Information
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TitleData
Title Short-term effects of a brief motivational intervention to reduce alcohol and drug risk among homeless adolescents.
Author Peterson PL., Baer JS., Wells EA., Ginzler JA., Garrett SB.
Country Alcohol and Drug Abuse Institute, University of Washington, 1107 Northeast 45th Street, Seattle, WA 98105, USA. pegpete@u.washington.edu
Year 2006
Numbers Pubmed ID: 16938063

Secondary Publication Information
There are currently no secondary publications defined for this study.


Extraction Form: Evidence Map
Arms
Number Title Description Comments
1 MI brief motivational enhancement
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2 TAU_a assessment only
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3 TAU_b assessment at follow-up only
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Design Details
Question... Follow Up Answer Follow-up Answer
Should this citation be included? Yes
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Does this paper originate from a primary study of interest? No
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Ages eligible (in years) 14
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19
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Total sample size (in all arms) 285
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Age distribution of enrolled population (in years) 17.4
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Substance used Alcohol
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Cannabis
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Opioid
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Stimulant
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Interventions studied? Behavioral
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Outcome? Objective measurement of use/abstinence and/or intensity
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Self report of use/abstinence and/or intensity
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Age variation of enrolled population (in years) 1.54
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Study type RCT
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Is any arm a brief intervention (or single session)? Yes
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Income level of country(ies) of origin ... Country(ies) name(s) Unclear ... United States
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Results & Comparisons


Results Data
Outcome: cannabis use days      Population: All Participants
Time Point Measure MI TAU_a TAU_b


0 months

N Analyzed 69 77 58
Mean 15.77 16.58 nr
SD 11.05 11.83 nr
SE


1 months

N Analyzed 69 77 58
Mean 13.61 14.81 14.15
SD 11.33 12.80 11.70
SE


3 months

N Analyzed 69 77 58
Mean 11.83 12.14 13.07
SD 11.74 12.08 12.33
SE
Outcome: nos use days      Population: All Participants
Time Point Measure MI TAU_a TAU_b


0 months

N Analyzed 69 77 65
Mean 12.72 11.56 nr
SD 16.27 17.49 nr
SE


1 months

N Analyzed 69 77 65
Mean 9.78 11.9 11.17
SD 13.83 17.22 15.61
SE


3 months

N Analyzed 69 77 65
Mean 8.19 10.56 10.08
SD 12.27 16.63 15.26
SE


Quality Dimensions
Dimension Value Notes Comments
Intention-to-treat-analysis: Bias due to incomplete reporting and analysis according to group allocation Yes
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Group similarity at baseline (selection bias): Selection bias due to dissimilarity at baseline for the most important prognostic indicators Yes
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Co-interventions (performance bias): Performance bias because co-interventions were different across groups Yes
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Compliance (performance bias): Performance bias due to inappropriate compliance with interventions across groups Yes
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Timing of outcome assessments (detection bias): Detection bias because important outcomes were not measured at the same time across groups Yes
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Additional Bias: Bias due to problems not covered elsewhere in the table. If yes, describe them in the Notes. No
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Random sequence generation (selection bias): Selection bias (biased allocation to interventions) due to inadequate generation of a randomized sequence Low
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Allocation concealment (selection bias): Selection bias (biased allocation to interventions) due to inadequate concealment of allocations prior to assignment Low
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Blinding of participants (performance bias): Performance bias due to knowledge of the allocated interventions by participants during the study High
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Blinding of personnel/ care providers (performance bias): Performance bias due to knowledge of the allocated interventions by personnel/care providers during the study. High
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Blinding of outcome assessor (detection bias): Detection bias due to knowledge of the allocated interventions by outcome assessors. High Interviewers were not blinded.
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Incomplete outcome data (attrition bias): Attrition bias due to amount, nature or handling of incomplete outcome data Low borderline (20%)
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Selective Reporting (reporting bias): Reporting bias due to selective outcome reporting
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Quality Rating
No quality rating data was found.