A Nurse-Led, School-Based Social and Educational Intervention for Siblings of Children With Cancer (SUPREME): Process Evaluation of Perceived Impacts.

This was a qualitative process evaluation of perceived impacts, not a test of whether the intervention improves outcomes. The sample was small, and parents' perspectives may have been more prominent than siblings', especially because some evaluation forms were completed with parents. Some interviews happened much later than one month after the intervention, which may affect recall. One author initiated the intervention and conducted some interviews, creating a risk of influencing responses. The study did not include teachers, although the nurse entered their classroom. The sibling sample was skewed toward younger children, limiting transferability to older siblings. The sample lacked ethnic diversity, limiting cultural transferability. Participants received different numbers of educational sessions, so experiences were not uniform. Families who did not find the intervention beneficial or who could not engage may have been absent.

The authors declared no conflicts of interest. The study was funded by Børnecancerfonden. One author initiated the SUPREME intervention and conducted some interviews.

Do not read the perceived benefits as proof that the programme works. This was a small qualitative process evaluation of experiences, not a controlled or comparative test of effects.