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Integrating patient needs into medical decisions is becoming increasingly essential for high quality care. To this end, there is a compelling need to elicit patients\u2019 perspectives through qualitative studies, to understand their experiences and needs in the aftermath of cancer. We aim to: (1) identify clinical, social and economic determinants of sexuality and fertility, and describe other living conditions of young BC survivors in France; and (2) explore young women\u2019s experience after BC in relation to clinical and information needs about fertility preservation and sexual health.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods and analysis<\/jats:title>\n                  <jats:p>This is a mixed-methods, cross-sectional, population-based study. In the quantitative component, women diagnosed with non-metastatic BC between 2009 and 2016 and aged 40 years or younger at diagnosis will be identified through the French network of cancer registries (FRANCIM). Participants will complete self-report questionnaires including standardised measures of sexuality, health-related quality of life (HRQoL), anxiety, depression, social deprivation and social support. Fertility and professional reintegration issues will also be assessed. Sexuality profiles will be identified by ascending hierarchical classification and fertility profiles will be identified by latent class models. Determinants of sexuality, fertility and HRQoL will be identified using a mixed regression model. Subsequently, semistructured interviews will be performed with a sample of 30\u2009women who participated in the quantitative study. Interviews will be recorded, transcribed synthetically and content analysis will be performed, with the aid of NVivo software.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Ethics and dissemination<\/jats:title>\n                  <jats:p>This study will be performed in accordance with the declaration of Helsinki. The protocol was approved in October 2020 by the Committee for the Protection of Persons North-West III (20.07.16.44445) and by the French national data protection authority (CNIL-MR003 No1989764-v0).<\/jats:p>\n                  <jats:p>The results of this project will be communicated to the scientific community through publications in international scientific peer-reviewed journals and communications to national and international congresses. Popularised results will also be provided to patient associations. The results of Candy project will also be published on the website of the sponsor, <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"www.cgfl.fr\">www.cgfl.fr<\/jats:ext-link>.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/bmjopen-2021-056834","type":"journal-article","created":{"date-parts":[[2022,9,28]],"date-time":"2022-09-28T11:41:49Z","timestamp":1664365309000},"page":"e056834","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Cross-sectional nationwide mixed-methods population-based study of living conditions, and identification of sexual and fertility profiles among young women after breast cancer in France: the Candy study protocol"],"prefix":"10.1136","volume":"12","author":[{"given":"Emerline L F","family":"Assogba","sequence":"first","affiliation":[{"name":"Breast and Gynaecologic Cancer Registry of C\u00f4te d\u2019Or, Epidemiology and Quality of Life Research Unit, Georges Fran\u00e7ois Leclerc Comprehensive Cancer Centre - UNICANCER, Dijon, Bourgogne-Franche-Comt\u00e9, France"},{"name":"Lipids, Nutrition, Cancer Research Center, French National Institute of Health and Medical Research (Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale [INSERM]) U1231, Dijon, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Agn\u00e8s","family":"Dumas","sequence":"additional","affiliation":[{"name":"Clinical Epidemiology and Economic Evaluation Applied to Vulnerable Populations (Epid\u00e9miologie Clinique et \u00c9valuation \u00c9conomique appliqu\u00e9e aux Populations Vuln\u00e9rables [ECEVE])\u2014INSERM UMR 1123, University of Paris, Paris, \u00cele-de-France, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne-Sophie","family":"Woronoff","sequence":"additional","affiliation":[{"name":"Cancer Registry of Doubs, Besan\u00e7on Regional University Hospital Centre, Besan\u00e7on, Bourgogne-Franche-Comt\u00e9, France"},{"name":"EA3181, Burgundy Franche-Comt\u00e9 University, Besan\u00e7on, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caroline","family":"Moll\u00e9vi","sequence":"additional","affiliation":[{"name":"Biometrics Unit, Montpellier Cancer Research Institute, Montpellier, Languedoc-Roussillon-Midi-Pyr\u00e9n\u00e9es, France"},{"name":"University of Montpellier, Montpellier, Languedoc-Roussillon-Midi-Pyr\u00e9n\u00e9es, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles","family":"Coutant","sequence":"additional","affiliation":[{"name":"Department of Surgical Oncology, Georges Fran\u00e7ois Leclerc Comprehensive Cancer Centre - UNICANCER, Dijon, Bourgogne-Franche-Comt\u00e9, France"},{"name":"Faculty of Medicine and Pharmacy, Burgundy Franche-Comt\u00e9 University, Dijon, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvain","family":"Ladoire","sequence":"additional","affiliation":[{"name":"Medical Oncology Unit, Georges Fran\u00e7ois Leclerc Comprehensive Cancer Centre - UNICANCER, Dijon, Bourgogne-Franche-Comt\u00e9, France"},{"name":"Chemotherapy and Immune Response Team, Lipides Nutrition Cancer, Dijon, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabelle","family":"Desmoulins","sequence":"additional","affiliation":[{"name":"Medical Oncology Unit, Georges Fran\u00e7ois Leclerc Comprehensive Cancer Centre - UNICANCER, Dijon, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8191-1222","authenticated-orcid":false,"given":"Tienhan Sandrine","family":"Dabakuyo-Yonli","sequence":"additional","affiliation":[{"name":"Breast and Gynaecologic Cancer Registry of C\u00f4te d\u2019Or, Epidemiology and Quality of Life Research Unit, Georges Fran\u00e7ois Leclerc Comprehensive Cancer Centre - UNICANCER, Dijon, Bourgogne-Franche-Comt\u00e9, France"},{"name":"Lipids, Nutrition, Cancer Research Center, French National Institute of Health and Medical Research (Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale [INSERM]) U1231, Dijon, Bourgogne-Franche-Comt\u00e9, France"},{"name":"National Quality of Life and Cancer Clinical Research Platform, Dijon, Bourgogne-Franche-Comt\u00e9, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2022,9,28]]},"reference":[{"key":"2025101812581780000_12.9.e056834.1","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21492"},{"key":"2025101812581780000_12.9.e056834.2","doi-asserted-by":"publisher","DOI":"10.1016\/S1470-2045(08)70179-7"},{"key":"2025101812581780000_12.9.e056834.3","unstructured":"Defossez G , Le Guyader-Peyrou S , Uhry Z . 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