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Equity Effects of Parenting Interventions for Child Conduct Problems: A Pan-European Individual Participant Data Meta-Analysis

Gardner, Frances, Leijten, Patty, Harris, Victoria, Mann, Joanna, Hutchings, Judy, Beecham, Jennifer, Bonin, Eva-Maria, Berry, Vashti, McGilloway, Sinead, Gaspar, Maria, and others. (2019) Equity Effects of Parenting Interventions for Child Conduct Problems: A Pan-European Individual Participant Data Meta-Analysis. The Lancet Psychiatry, . ISSN 2215-0366. (doi:10.1016/S2215-0366(19)30162-2)

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We did a systematic review and individual participant data meta-analysis by searching CINAHL, Embase, Global Health, Medline, and PsycINFO, for studies published from inception to March 15, 2019. We also searched the Incredible Years website library and consulted with experts, including the European Incredible Years mentors' network. We included data from all completed randomised trials of the Incredible Years parenting intervention in Europe that included children aged 1-12 years, including unpublished trials, without restriction on publication year or outcome measures. We included prevention (selective or universal) and treatment or indicated prevention trials (for children diagnosed or above the clinical cutoff for conduct problems). We excluded trials or conditions within trials that were not randomised, included additional non-parenting material (eg, child-focused interventions), or were abbreviated, non-standard versions of the usual Incredible Years intervention of 12-14 weekly sessions. We requested individual participant data from the study authors. The primary outcome was child conduct problems, assessed using the Eyberg Child Behavior Inventory Intensity (ECBI-I) scale. Moderators were analysed using multilevel modelling with multiple imputation.


We found no evidence for differential effects by social disadvantage, suggesting that Incredible Years is unlikely to widen socioeconomic inequalities in conduct problems. Furthermore, the programme might be an important tool for reducing social disparities and improving poor long-term outcomes in disadvantaged families because follow-up studies indicate that benefits persist. Clinicians and commissioners can be reassured that the programme is similarly effective for families from different backgrounds.

Item Type: Article
DOI/Identification number: 10.1016/S2215-0366(19)30162-2
Divisions: Faculties > Social Sciences > School of Social Policy Sociology and Social Research
Depositing User: Jennifer Beecham
Date Deposited: 14 May 2019 14:41 UTC
Last Modified: 06 Nov 2019 00:00 UTC
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Beecham, Jennifer:
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