Rotheray, Sebastian and Racey, Daniel and Rodgers, Lauren and McGilloway, Sinéad and Berry, Vashti and Ford, Tamsin (2014) Innovations in Practice: Further evidence on the effectiveness of the strengths and difficulties added value score as an outcome measure for child and adolescent services. Child and Adolescent Mental Health, 19 (4). pp. 270-273. ISSN 1475-357X

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Abstract

Background: The Strengths and Difficulties Added Value Score (SDQ AVS) uses a large epidemiological study to predict follow-up parental SDQ scores for the evaluation of routine outcomes. Method: We tested the prediction of the SDQ AVS derived from a national population survey separately on scores for the waiting list control and intervention groups in a randomised controlled trial. If the SDQ AVS is to be clinically useful, it needs to function as expected across different populations. Results: In the control arm, the SDQ AVS predicted an effect size of 0.15 (95% CI −0.01–0.30) compared to an expected effect size of 0, as the children in this arm received no treatment. In the experimental arm, the SDQ AVS predicted an effect size of 0.62 (95% CI 0.42–0.83) compared to the study effect size of 0.53. Change scores overestimated the effect size in both arms (control 0.50 95% CI 0.34–0.66, intervention 0.85 95% CI 0.66–1.04). Conclusion: Our findings suggest that the SDQ AVS adjusts for spontaneous improvement, regression to the mean and attenuation.

Item Type:	Article
Keywords:	SDQ AVS; routine outcome measurement; service evaluation;
Academic Unit:	Faculty of Science and Engineering > Psychology
Item ID:	9280
Identification Number:	https://doi.org/10.1111/camh.12059
Depositing User:	Dr. Sinéad McGilloway
Date Deposited:	27 Feb 2018 15:39
Journal or Publication Title:	Child and Adolescent Mental Health
Publisher:	Wiley
Refereed:	Yes
URI:	http://onlinelibrary.wiley.com
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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