Strengths and limitations
The small sample size and no control group limits the generalizability of the results, however, they serve the purpose of the feasibility study, to inform a future RCT. The fact that just 40% of the sample were boys, might be a reflection of the composition of the sample, but it might also represent a skewness in the sample, in terms of gender. The use of self-developed questionnaires for parent-reported experiences with healthcare limits the ability to compare our results to similar studies. The use of different questionnaires for children and parents also limits the ability to compare their experiences. There was a small number of children and/or adolescents declining to fill out the experience measures. These children and/or adolescents might be dissatisfied, and thus these missing responses could possibly affect the reported experiences with the intervention negatively.The strengths of the study are a large percentage of eligible families that consented to receiving and completing the intervention (91%). Due to logistic reasons, the proportion of missing data was 5% percent. This missingness was an artefact of the design and believed to represent missing completely at random [