Psychosocial determinants of the renouncing healthcare for financial reasons in five underprivileged urban areas of the Paris region in 2001 In France, thanks to its social security System, access to care is guaranteed for ail. However, the IRDES national surveys on health and social protection reveal that approximately one person out of five questioned states not having sought care for financial reasons. Our objective was to show that beyond the classically studied socio-economic factors, other factors, such as living conditions, social ruptures and integrations, representations of health and psychological characteristics, are associated with not seeking care. This survey, undertaken in 2001, studied a random sample of 525 people living in five underprivileged urban areas in the Paris region. The associations between not seeking care for financial reasons and psychosocial factors were studied by logistic régression adjusted for age, gender, size of household, presence of chronic diseases, health coverage, level of income, and employment situation. The estimation of the model's adequacy was based on Pearson residues and deviance residues. The model's stability was estimated by a bootstrap method. Not seeking care for financial reasons is more frequently reported by people having suffered from difficult childhood events, financial difficulties in adulthood, sexual, physical or psychological abuse; people with a poor acceptance of disease, and those who award high priority to their health. Finally, the lower the level of self-esteem the more people déclare not having sought care having renounced.