Evaluation of the universal prevention program Klasse2000 in fourth grade primary school children: protocol for a propensity score-matching approach

Background: Klasse2000 is the most widely adopted school-based prevention program in Germany. It addresses healthpromotion, addiction, and violence prevention in primary schools. As a universal prevention program, it has reached more than1.4 million German children in the past 25 years.Objective: T...

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Main Author: Kliem, Sören (Author)
Contributors: Krieg, Yvonne ; Lohmann, Anna ; Mößle, Thomas
Format: Electronic Article
Language:English
Published: 2020
In: JMIR Research Protocols
Year: 2020, Volume: 9, Issue: 8
Online Access: Presumably Free Access
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Keywords:
Evaluation
Prävention
Grundschulkind
Klasse2000
prevention program
student survey
Propensity score matching

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520 |a Background: Klasse2000 is the most widely adopted school-based prevention program in Germany. It addresses healthpromotion, addiction, and violence prevention in primary schools. As a universal prevention program, it has reached more than1.4 million German children in the past 25 years.Objective: The effectiveness of Klasse2000 will be evaluated with a large representative survey among students. Students whohave participated in the prevention program (intervention group) will be compared with students who did not participate (controlgroup). The comparison will cover the following outcome domains: well-being, self-esteem, emotion regulation, food habits,behavioral problems, and school and classroom atmosphere. Furthermore, victimization and perpetration regarding bullying,alcohol consumption, smoking, and media consumption are assessed.Methods: To control for potential group differences, treatment effects will be estimated using propensity score-matching, whichmatches students from the intervention and control groups based on an identical propensity score or a propensity score that doesnot differ by more than a previously defined distance. The treatment effect will then be estimated in the matched sample takingthe matching process into account.Results: Enrollment of schools began in March 2017. A total of 6376 students participated in the survey (n=4005 in controlgroup; n=2371 in Klasse2000). The parent survey was returned by 52.13% (3324/6376) of parents. Results are expected inmid-2020.Conclusions: The results on the effectiveness of the Klasse2000 prevention program will form an empirical basis for legitimizinguniversal prevention programs and for planning future prevention approaches.Trial Registration: German Clinical Trials Register DRKS00014332; https://tinyurl.com/y2trvq4p. International Registered Report Identifier (IRRID): DERR1-10.2196/14371 
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