Improving the implementation of KiVa antibullying program with tailored support: Study protocol for a cluster randomized controlled trial.

BACKGROUND: There are no evidence-based models to support the implementation of school-based bullying prevention programs. Our primary objective is to examine the impact of tailored support on the implementation of the KiVa antibullying program. Our second objective is to evaluate whether the offered support influences student outcomes (e.g., victimization, bullying perpetration). We also assess the cost-effectiveness of the provided support and conduct a process evaluation. METHODS: In a cluster randomized control trial (cRCT), we compare program fidelity between schools that receive implementation support and those that do not. Twenty-four (N = 24) schools in Finland were randomized to either the IMPRES condition (receiving support, n = 12) or the control group (KiVa as usual, n = 12). In the IMPRES condition, pre-assessment and staff training were organized, and a selected team of staff members received four mentoring sessions during one academic year. Staff and students answer questionnaires at the end of school year 0, at post-intervention (year 1) and again at the 1-year follow-up (year 2). Our primary outcomes concern two main program components - universal and indicated actions - reflecting program fidelity. As secondary outcomes, we examine the level of bullying victimization and perpetration as well as students' perception of several program fidelity indicators. Finally, we assess several tertiary outcomes, collect resource data and conduct qualitative interviews to perform additional analyses. CONCLUSION: This trial will inform us of whether implementation support can boost program fidelity and have a distal impact on bullying prevalence. TRIAL REGISTRATION: ISRCTN15558617 https://doi.org/10.1186/ISRCTN15558617.

The long-term cost of childhood conduct problems: Finnish Nationwide 1981 Birth Cohort Study.

BACKGROUND: Commonly recognized childhood conduct problems often lead to costly problems in adulthood. This study aimed to evaluate the long-term cumulative cost of childhood conduct problems until the age of 30. The costs included inpatient care, nervous system medicine purchases, and criminal offences. METHODS: The study used population-based nationwide 1981 birth cohort data. Families and teachers assessed the conduct problems of the eight-year-olds based on Rutter questionnaires. We grouped 5,011 children into low-level of conduct problems (52%), intermediate-level of conduct problems (37%), and high-level of conduct problems (11%) groups, based on combined conduct symptoms scores. The analysis included the cohort data with the Care Register for Health Care, the Drug Prescription Register, and the Finnish Police Register. The cost valuation of service use applied national unit costs in 2016 prices. We used Wilcoxon rank-sum test to test the differences between groups and gender. RESULTS: During 1989-2011, average cumulative costs of the high-level (€44,348, p < .001) and the intermediate-level (€19,405, p < .001) of conduct problems groups were higher than the low-level of conduct problems group's (€10,547) costs. In all three groups, the boys' costs were higher than girls' costs. CONCLUSIONS: The costs associated with conduct problems in childhood are substantial, showing a clear need for cost-effective interventions. Implementation decisions of interventions benefit from long-term cost-effectiveness modelling studies. Costing studies, like this, provide cost and cost offset information for modelling studies.

Cost-effectiveness of physical activity intervention in children - results based on the Physical Activity and Nutrition in Children (PANIC) study.

BACKGROUND: We assessed the cost-effectiveness of a 2-year physical activity (PA) intervention combining family-based PA counselling and after-school exercise clubs in primary-school children compared to no intervention from an extended service payer's perspective. METHODS: The participants included 506 children (245 girls, 261 boys) allocated to an intervention group (306 children, 60 %) and a control group (200 children, 40 %). The children and their parents in the intervention group had six PA counselling visits, and the children also had the opportunity to participate in after-school exercise clubs. The control group received verbal and written advice on health-improving PA at baseline. A change in total PA over two years was used as the outcome measure. Intervention costs included those related to the family-based PA counselling, the after-school exercise clubs, and the parents' taking time off to travel to and participate in the counselling. The cost-effectiveness analyses were performed using the intention-to-treat principle. The costs per increased PA hour (incremental cost-effectiveness ratio, ICER) were based on net monetary benefit (NMB) regression adjusted for baseline PA and background variables. The results are presented with NMB and cost-effectiveness acceptability curves. RESULTS: Over two years, total PA increased on average by 108 h in the intervention group (95 % confidence interval [CI] from 95 to 121, p < 0.001) and decreased by 65.5 h (95 % CI from 81.7 to 48.3, p < 0.001) in the control group, the difference being 173.7 h. the incremental effectiveness was 87 (173/2) hours. For two years, the intervention costs were €619 without parents' time use costs and €860 with these costs. The costs per increased PA hour were €6.21 without and €8.62 with these costs. The willingness to pay required for 95 % probability of cost-effectiveness was €14 and €19 with these costs. The sensitivity analyses revealed that the ICER without assuming this linear change in PA were €3.10 and €4.31. CONCLUSIONS: The PA intervention would be cost-effective compared to no intervention among children if the service payer's willingness-to-pay for a 1-hour increase in PA is €8.62 with parents' time costs. TRIAL REGISTRATION: ClinicalTrials.gov: NCT01803776. Registered 4 March 2013 - Retrospectively registered, https://clinicaltrials.gov/ct2/results?cond=&term=01803776&cntry=&state=&city=&dist= .