Cystic Fibrosis Adherence Study

This study aims to assess the role of some factors which can influence the chest physiotherapy adherence in adult with cystic fibrosis. At first, we are going to try to consider the adherence of chest physiotherapy. Then, after dividing the patients into two groups - adherent or not adherent - we will attempt to identify the factors which can influence this adherence. It consists in a short questionnaire that the patient will fill during usual visits. The hypothesis is that the following factors can play a role in adherence of chest physiotherapy: * Age * Age of diagnostic * Sex * Fev1 * Number of antibiotic course * Anxiety/depression * Work time * Socio-professional category * Individual situation * Physiotherapy with liberal physiotherapist and transport time * Sport practice * Family support * Feeling of work time burden * Feeling of physiotherapy efficiency * Feeling of physiotherapy burden