1McMartin, SE, Kingsbury, M, Dykxhoorn, J, Colman, I. Time trends in symptoms of mental illness in children and adolescents in Canada. Can Med Assoc J 2014; 186: E672–8.
2Lessof, C, Ross, A, Brind, R, Bell, E, Newton, S. Longitudinal Study of Young People in England Cohort 2: Health and Wellbeing at Wave 2. TNS BMRB, 2016.
3McManus, S, Bebbington, P, Jenkins, R, Brugha, T. Mental Health and Wellbeing in England: Adult Psychiatric Morbidity Survey 2014. NHS Digital, 2016.
4Perou, R, Bitsko, RH, Blumberg, SJ, Pastor, P, Ghandour, RM, Grfroerer, JC, et al. Mental health surveillance among children – United States, 2005–2011. MMWR Suppl 2013; 62: 1–35.
6Bor, W, Dean, AJ, Najman, J, Hayatbakhsh, R. Are child and adolescent mental health problems increasing in the 21st century? A systematic review. Aust N Z J Psychiatry 2014; 48: 606–16.
7Fink, E, Patalay, P, Sharpe, H, Holley, S, Deighton, J, Wolpert, M. Mental health difficulties in early adolescence: a comparison of two cross-sectional studies in England from 2009 to 2014. J Adolesc Health 2015; 56: 502–7.
12Weisz, JR, Kuppens, S, Ng, MY, Eckshtain, D, Ugueto, AM, Vaughn-Coaxum, R, et al. What five decades of research tells us about the effects of youth psychological therapy: a multilevel meta-analysis and implications for science and practice. Am Psychol 2017; 72: 79–117.
13Jensen, SA, Corralejo, SM. Measurement issues: large effect sizes do not mean most people get better - clinical significance and the importance of individual results. Child Adolesc Ment Health 2017; 22: 163–6.
14Wolpert, M. Commentary: why measuring clinical change at the individual level is challenging but crucial–commentary on Jensen and Corralejo (2017). Child Adolesc Ment Health 2017; 22: 167–9.
15Clark, DM, Canvin, L, Green, J, Layard, R, Pilling, S, Janecka, M. Transparency about the outcomes of mental health services (IAPT approach): an analysis of public data. Lancet 2017; 391: 679–86.
16Evans, C, Margison, F, Barkham, M. The contribution of reliable and clinically significant change methods to evidence-based mental health. Evid Based Ment Health 1998; 1: 70–2.
17Wolpert, M, Görzig, A, Deighton, J, Fugard, AJ, Newman, R, Ford, T. Comparison of indices of clinically meaningful change in child and adolescent mental health services: difference scores, reliable change, crossing clinical thresholds and ‘added value’–an exploration using parent rated scores on the SDQ. Child Adolesc Mental Health 2015; 20: 94–101.
18Wolpert, M, Dalzell, K, Jacob, J, Bloxham, J, Barnard, M, Karwatzki, E, et al. Routine outcome monitoring in child and adolescent mental health in the United Kingdom at the individual and systems levels. In The Cycle of Excellence: Using Deliberate Practice to Improve Supervision and Training (eds Rousmaniere, T, Goodyear, RK, Miller, SD, Wampold, BE). Wiley-Blackwell, 2017.
19Jacobson, NS, Truax, P. Clinical significance: a statistical approach to defining meaningful change in psychotherapy research. J Consult Clin Psychol 1991; 59: 12–9.
20Wolpert, M, Jacob, J, Napoleone, E, Whale, A, Calderon, A, Edbrooke-Childs, J. Child- and Parent-Reported Outcomes and Experience from Child and Young People's Mental Health Services 2011–2015. CAMHS Press, 2016.
21Chorpita, BF, Yim, L, Moffitt, C, Umemoto, LA, Francis, SE. Assessment of symptoms of DSM-IV anxiety and depression in children: a revised child anxiety and depression scale. Behav Res Ther 2000; 38: 835–55.
23Stein, DJ, Fineberg, NA, Bienvenu, OJ, Denys, D, Lochner, C, Nestadt, G, et al. Should OCD be classified as an anxiety disorder in DSM-V? Depress Anxiety 2010; 27: 495–506.
24Law, D, Wolpert, M, editors. Guide to Using Outcomes and Feedback Tools With Children, Young People and Families (2nd edn). CAMHS Press, 2014.
25Kosters, MP, Chinapaw, MJM, Zwaanswijk, M, van der Wal, MF, Koot, HM. Structure, reliability, and validity of the revised child anxiety and depression scale (RCADS) in a multi-ethnic urban sample of Dutch children. BMC Psychiatry 2015; 15: 132.
27Canty, A, Ripley, B. boot: Bootstap R (S-Plus) Functions. 1.3-20 ed2017. p. R package. R, 2017.
28Cohen, J. A power-primer. Psychol Bull 1992; 112: 155.
29Edlund, JN, Carlberg, G. Psychodynamic psychotherapy with adolescents and young adults: outcome in routine practice. Clin Child Psychol Psychiatry 2016; 21: 66–80.
30Jónsson, H, Thastum, M, Arendt, K, Juul-Sørensen, M. Group cognitive behavioural treatment of youth anxiety in community based clinical practice: clinical significance and benchmarking against efficacy. J Anxiety Disord 2015; 35: 9–18.
31Biegel, GM, Brown, KW, Shapiro, SL, Schubert, CM. Mindfulness-based stress reduction for the treatment of adolescent psychiatric outpatients: a randomized clinical trial. J Consult Clin Psychol 2009; 77: 855–66.
32Hayes, L, Boyd, CP, Sewell, J. Acceptance and commitment therapy for the treatment of adolescent depression: a pilot study in a psychiatric outpatient setting. Mindfulness 2011; 2: 86–94.
33Nilsen, TS, Handegard, BH, Eisemann, M, Kvernmo, S. Evaluating change in symptomatic and functional level of children and youth with emotional disorders: a naturalistic observation study. Eur Child Adolesc Psychiatry 2015; 24: 1219–31.
34Seidel, JA, Miller, SD, Chow, DL. Effect size calculations for the clinician: methods and comparability. Psychother Res 2014; 24: 470–84.
35Royal College of Paediatrics and Child Health. National Paediatric Diabetes Audit. RCPCH, 2015.
37Mazor, KM, Clauser, BE, Field, T, Yood, RA, Gurwitz, JH. A demonstration of the impact of response bias on the results of patient satisfaction surveys. Health Serv Res 2002; 37: 1403–17.
38Neufeld, SA, Dunn, VJ, Jones, PB, Croudace, TJ, Goodyer, IM. Reduction in adolescent depression after contact with mental health services: a longitudinal cohort study in the UK. Lancet Psychiatry 2017; 4: 120–7.
39Whiteford, HA, Harris, MG, McKeon, G, Baxter, A, Pennell, C, Barendregt, JJ, et al. Estimating remission from untreated major depression: a systematic review and meta-analysis. Psychol Med 2013; 43: 1569–85.
40Wolpert, M. Failure is an option. Lancet Psychiatry 2016; 3: 510–2.
41Wampold, B. The Great Psychotherapy Debate: Models, Methods, and Findings. Routledge, 2013.