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Study Title and Description

Screening and brief intervention to reduce marijuana use among youth and young adults in a pediatric emergency department.



Key Questions Addressed
1 Evidence map
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Primary Publication Information
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TitleData
Title Screening and brief intervention to reduce marijuana use among youth and young adults in a pediatric emergency department.
Author Bernstein E., Edwards E., Dorfman D., Heeren T., Bliss C., Bernstein J.
Country Boston University School of Public Health and the Youth Alcohol Prevention Center, Boston, MA, USA. ebernste@bu.edu
Year 2009
Numbers Pubmed ID: 20053238

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


Extraction Form: Evidence Map
Arms
Number Title Description Comments
1 MI
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2 TAU Assessed control
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Design Details
Question... Follow Up Answer Follow-up Answer
Should this citation be included? Yes
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Ages eligible (in years) 14
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21
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Total sample size (in all arms) 210
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Age distribution of enrolled population (in years) nd
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nd
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Substance used Cannabis
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Cannabis
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Cannabis
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Interventions studied? Behavioral
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No active treatment
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Behavioral
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No active treatment
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Behavioral
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No active treatment
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Outcome? Self report of use/abstinence and/or intensity
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Self report 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) nd
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nd
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nd
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nd
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nd
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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 Upper income
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Upper income
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Upper income
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Results & Comparisons


Results Data
Odds Ratio (OR) 95% CI low 95% CI high P-Value Odds Ratio (OR) 95% CI low 95% CI high P-Value Odds Ratio (OR) 95% CI low 95% CI high P-Value
Outcome: pct abstinent for cannabis      Population: All Participants Between-Arm Comparisons
Time Point Measure MI TAU Comparison Measure MI vs. TAU


0 months

N Analyzed 68 71
Counts 0 0


3 months

N Analyzed 42 55
Counts 6 7


12 months

N Analyzed 47 55 2.2
Counts 21 12 0.98
4.92
0.053
Outcome: cannabis use days      Population: All Participants
Time Point Measure MI TAU


0 months

N Analyzed 68 71
Mean 19 15.3
SD 10.9 10.1


3 months

N Analyzed 41 54
Mean 14.2 13.7
SD 10.8 11.1


12 months

N Analyzed 47 55
Mean 11 13.2
SD 10.7 11.7


Quality Dimensions
Dimension Value Notes Comments
Intention-to-treat-analysis: Bias due to incomplete reporting and analysis according to group allocation No
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Group similarity at baseline (selection bias): Selection bias due to dissimilarity at baseline for the most important prognostic indicators Adjusted
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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 No Data
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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. Low
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Incomplete outcome data (attrition bias): Attrition bias due to amount, nature or handling of incomplete outcome data High 30%
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Selective Reporting (reporting bias): Reporting bias due to selective outcome reporting
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Quality Rating
Guideline Used Overall Rating