Role of the Spouse/Partner of Persons Treated With Chemotherapy for Colon Cancer

Inclusion Criteria: Inclusion criteria for patients: Men or women : * able to understand written and spoken French ; * Who have been informed about the study; * with stage III or IV cancer of the colon or recto-sigmoid junction (Code C18 and C19 of the ICD 10), operated or not with curative intent; treated with chemotherapy in one of the study centres (adjuvant or 1st-line chemotherapy or palliative chemotherapy); * Currently living with a spouse or partner; * Who has consented to his/her spouse/partner taking part in the study. Inclusion criteria for the spouse/partner: Men or women: * able to understand written and spoken French ; * Who have been informed about the study; living at the home of the spouse/partner; * Able to take part in an interview of approximately one hour; * Who has provided consent to take part in the study. Exclusion Criteria: Exclusion criteria for patients: Men or women : * Under guardianship; * With a severe disease resulting in a major handicap; * With severe mental retardation affecting ability to understand; * With rectal cancer; * with stage I or II cancer of the colon or recto-sigmoid junction; * with a history of treated cancer (colorectal or other); * with another cancer under treatment Exclusion criteria for the spouse: Men or women: * Under guardianship; * With a severe disease resulting in a major handicap; * With severe mental retardation affecting ability to understand