Siblings of children and young people with a chronic illness are at increased risk of poor psychological functioning. A number of studies have attempted to implement and evaluate interventions targeting the psychological well-being of this at-risk group. This systematic review summarises the evidence regarding psychological functioning of siblings following an intervention targeting their well-being. The meta-analysis considered behaviour and knowledge, two of the most frequently studied outcomes. The following databases were used: PsycINFO, EMBASE, CINAHL, PubMed, Scopus and Web of Science. Seventeen studies were eligible to be included in the systematic review and eight in the meta-analysis. Results from the systematic review reflected the inconsistency of intervention evaluations in this area with a high level of heterogeneity and a total of 23 outcomes considered across the 17 included studies. The meta-analysis estimated effect sizes using a standardised mean difference (SMD) approach. Pre-post analysis suggested significant improvement in behavioural outcomes and knowledge of their sibling’s health conditions with a SMD of − 0.44 [95% CI (− 0.6, − 0.29); p = 0.000] and 0.69 [(95% CI = 0.42, 0.96); p = 0.000], respectively. The SMD was not significant for behavioural outcomes when considering treatment–control studies. In conclusion, the findings suggest interventions for well-being have a positive effect on the psychological functioning of siblings of children and young people with a chronic illness, but their specificity needs to be established. There is a need for further, more methodologically robust research in this area.Electronic supplementary materialThe online version of this article (10.1007/s10567-018-0253-x) contains supplementary material, which is available to authorized users.

The level of effectiveness shown here is comparable to that previously demonstrated by more specialist services in secondary and tertiary care. The nonlinear association between number of sessions and recovery highlights the importance of early change, across the eating disorders.

Objective: CBT-T is a relatively new, brief cognitive behavioral therapy eating disorder treatment for non-underweight patients. This study evaluates CBT-T independently from the team that developed the protocol, and examines the relationship between eating disorder duration and CBT-T effectiveness.Method: A case series design was used, comprising N = 40 adults with bulimia or atypical anorexia type eating disorders. CBT-T was delivered by CBT therapists in a specialist outpatient service. Mixed model analysis examined the interactions between eating disorder duration and change to eating disorder psychopathology and secondary impairment from pre-post treatment. Abstinence, good outcome, and remission rates were also provided.Results: Intervention effect sizes were large. Treatment completers reported abstinence from binge eating and purging over the final 28-days, and 7-days of treatment at 30.1%, and 73.1%, respectively; 76.9% reported good outcome; and 23.1% reported remission. No relationship between eating disorder duration and treatment effectiveness was found.