Accepted for/Published in: JMIR Research Protocols
Date Submitted: Apr 15, 2019
Open Peer Review Period: Apr 23, 2019 - May 7, 2019
Date Accepted: Apr 28, 2020
(closed for review but you can still tweet)
Evaluation of the Universal Prevention Program Klasse2000 in Fourth Grade Primary School Children: Study Protocol for a Propensity Score Matching Approach
ABSTRACT
Abstract
Background:
Klasse2000 is the most widely adopted school-based prevention program in Germany. It addresses health promotion as well as addiction and violence prevention in primary schools. As a universal prevention program, it has reached more than 1.4 million German children in the past 25 years.
Methods:
The effectiveness of Klasse2000 will be evaluated with a large representative survey among students. Students who have participated in the prevention program (intervention group - IG) will be compared to students who did not participate (control group CG). The comparison will cover the following outcome domains: well-being, self-esteem, emotion regulation, food habits, behavioral problems as well as the school and classroom atmosphere. Furthermore, victimization as well as perpetration regarding bullying, alcohol consumption, smoking and media consumption are assessed. To control for potential group differences the treatment effects will be estimated using propensity score matching. (PSM). PSM matches students from the IG and the CG based on an identical propensity score (PS) or a PS that does not differ by more than a previously defined distance. The treatment effect will then be estimated in the matched sample taking the matching process into account. Discussion: The results regarding the effectiveness of the Klasse2000 prevention program will form an empirical basis for legitimizing universal prevention programs as well as for planning future prevention approaches. Trial Registration: German Clinical Trial Registration DRKS-ID, ID: DRKS00014332. Registered on March 22nd, 2018; version 1
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