title: Patients' views on the embryo storage time limits.
abstract: The establishment of the length of embryo storage has been based on socio-political criteria. There are different regulations, guidelines and health care policies worldwide. This mixed-methods study aimed to assess the opinion of patients about the embryo storage time limit, and the perception of the criteria underlying the establishment of the storage period offered to them. Between August 2011 and December 2012, 534 IVF patients from Portugal participated in a quantitative questionnaire and 34 couples were interviewed. Overall, 38% of participants preferred the duration of 4-5 years, 38% extended it beyond 5 years and 23% indicated 3 years. Having experienced at least one previous cycle was directly associated with agreeing with a duration of storage longer than 5 years, for both women and men. Having children was inversely associated with longer duration of storage, among women. One-third of the 34 interviewed couples stated that their knowledge concerning embryo storage was insufficient. Nevertheless, all the interviewees reported at least one possible reason for the legal establishment of the storage period offered to them, highlighting financial costs and decreased embryo quality. There are misconceptions and gaps in awareness of cryopreservation, which may shape patients' opinions. Accurate information regarding policy on storage of embryos is needed.
authors.affiliation: EPIUnit-Institute of Public Health, University of Porto, Rua das Taipas 135, Porto, 4050-600 Portugal.
authors.forename: Margarida
authors.initials: M
authors.lastname: Pereira
authors.affiliation: EPIUnit-Institute of Public Health, University of Porto, Rua das Taipas 135, Porto, 4050-600 Portugal; Department of Clinical Epidemiology, Predictive Medicine and Public Health, Alameda Professor Hernâni Monteiro, University of Porto Medical School, Porto 4200-319, Portugal.
authors.forename: Catarina
authors.initials: C
authors.lastname: Samorinha
authors.affiliation: EPIUnit-Institute of Public Health, University of Porto, Rua das Taipas 135, Porto, 4050-600 Portugal.
authors.forename: Elisabete
authors.initials: E
authors.lastname: Alves
authors.affiliation: Centre for Social Studies, University of Coimbra, Coimbra 3000-995, Portugal.
authors.forename: Helena
authors.initials: H
authors.lastname: Machado
authors.affiliation: EPIUnit-Institute of Public Health, University of Porto, Rua das Taipas 135, Porto, 4050-600 Portugal.
authors.forename: Mariana
authors.initials: M
authors.lastname: Amorim
authors.affiliation: EPIUnit-Institute of Public Health, University of Porto, Rua das Taipas 135, Porto, 4050-600 Portugal. Electronic address: susilva@ispup.up.pt.
authors.forename: Susana
authors.initials: S
authors.lastname: Silva
mesh_terms: D000328:Adult; D015925:Cryopreservation; D004622:Embryo, Mammalian; D005260:Female; D006801:Humans; D008297:Male; D011174:Portugal; D011795:Surveys and Questionnaires; D013997:Time Factors
keywords: IVF; cryopreservation; embryo disposition; public policy