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Table 1 Overview of previous studies on the effectiveness of the PEERS® parent-assisted curriculum for adolescents

From: The ACCEPT-study: design of an RCT with an active treatment control condition to study the effectiveness of the Dutch version of PEERS® for adolescents with autism spectrum disorder

Author Design N Summary of significant findings per outcome measure
Laugeson et al. 2009 [15] RCTa: Waitlist control group 33 Adolescent report: Improved social knowledge and social contacts
Parent report: Improvement in social skills
Laugeson et al. 2012 [14] RCT: Waitlist control group 28 Adolescent report: Improved social knowledge, social contacts
Parent report: Improvement in social skills and reduction in social impairment
Schohl et al. 2014 [16] RCT: Waitlist control group 58 Adolescent report: Enhanced social knowledge, social contacts and declined social anxiety.
Parent report: Reduction in social impairment as measured by the SRS
Yoo et al. 2014 [9] RCT: Waitlist control group 47 Adolescent report: Improved social knowledge.
Parent report: decreased ASD symptoms on the Autism Developmental Observation Schedule (ADOS) and decreased depressive symptoms
Mandelberg et al. 2014 [17] Pre- posttest design with follow-up 53 Adolescent report: Improved social knowledge and social contacts (1-5 year follow-up)
Parent report: Social functioning improvement and maintenance after (1-5 year follow-up)
Dolan et al. 2016 [18] RCT: Waitlist control group 58 Adolescent report: Enhanced social skills knowledge
Observational measure: Improvement on behavioral observation (CASS) on subscale vocal expressiveness
Rabin et al. 2018 [10] RCT: Waitlist control group 41 Adolescent report: Increased social get-togethers, greater empathy and had more knowledge of social skills.
Parent report: Improved social skills and reduced autism symptomology.
The effects maintained at a 16-week follow-up assessment.
Observational measure: Showed more social behavior (e.g. heightened engagement and question asking in conversations with a unknown peer)
Schum et al. 2018 [11] RCT: Waitlist control group 72 Parent report: Improved social skills knowledge, reduced autistic mannerisms and improved social functioning after intervention, replicating these results for the delayed treatment group
  1. aRCT randomized controlled trail