Statistical analysis
Correlations between the scores of the 4 scales were analyzed. Subsequently, the correlation between the questionnaires (IES-R, PSS, STAI-Y, PedsQL) and the variable “months”, the time between oncological diagnosis to starting the study, was determined. Comparisons between groups of parents were made using the Mann-Whitney U test for non-parametric samples. Statistical analysis was performed using R 4.0.3 version.