Impact of socioeconomic factors on time to diagnosis of childhood cancer

In adults, there is a link between socioeconomic status (SES) and cancer prognosis, notably due to increased time to diagnosis (TTD) in deprived population leading to the dissemination of the disease. In children, such an association has not been clearly reported. The objective of our study was to assess the impact of SES on TTD of childhood cancer and its potential consequences on cancer prognosis. We carried out a multicenter retrospective study based on the LOGAFTER multi centric database. We studied SES at the individual level (parental professions, family structure) and the ecological level (EDI score, travel time by car). We assessed the factors potentially associated with an increased TTD with a Cox regression model, and we illustrated TTD by categories by using Kaplan-Meier curves. 854 children were included. The median time to diagnosis was 28 days [12;64]. TTD differed significantly according to the type of tumor. An usual care pathway did not impact TTD. However, an initial management by professionals not usually involved in the specific childhood cancer context increased TTD. None of the SES ecological variables were strictly associated with an impact on TTD, and a trend was noted for single-parent families (increased TTD, <i>p</i> = 0.057). In our cohort, TTD did not impact on the vital and relapse status. In this study, the impact of SES on TTD in children on both the individual and ecological levels was not clear. However, we noted some keys at the individual scale that require further investigation to explain potential associations.