Article Text

Download PDFPDF

Prevalence and characteristics of polycystic ovary syndrome in Brazilian women: protocol for a nation-wide case–control study
  1. Poli Mara Spritzer1,2,
  2. Lucas B Marchesan1,3,
  3. Betânia R Santos3,
  4. Felipe V Cureau3,
  5. Karen Oppermann4,
  6. Rosana Maria dos Reis5,
  7. Rui A Ferriani5,
  8. Rita Weiss6,
  9. Ricardo Meirelles6,
  10. Ana Lucia Candido7,
  11. Fernando M Reis7
  12. Brazilian PCOS Network
    1. 1 Department of Physiology and Postgraduate Program in Medical Sciences: Endocrinology, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
    2. 2 Gynecological Endocrinology Unit, Endocrine Division, Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
    3. 3 Postgraduate Program in Medical Sciences: Endocrinology, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
    4. 4 Department of Gynecology and Obstetrics, Universidade de Passo Fundo, Passo Fundo, Brazil
    5. 5 Department of Gynecology and Obstetrics Ribeirao Preto, Universidade de Sao Paulo Campus de Ribeirao Preto, Ribeirao Preto, Brazil
    6. 6 Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione, Rio de Janeiro, Brazil
    7. 7 Department of Gynecology and Obstetrics, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
    1. Correspondence to Dr Poli Mara Spritzer; spritzer{at}


    Introduction Brazil is a large country, with a population of mixed ethnic background and broad variation in dietary and physical activity traits across its five main regions. Because data on Brazilian women with polycystic ovary syndrome (PCOS) are still scarce, a nation-wide collaborative study was designed to determine the prevalence of metabolic and reproductive abnormalities and the presence of anxiety and depression in Brazilian women with PCOS. In addition, the study aims at describing how these characteristics are distributed across PCOS phenotypes and at detecting associations with regional demographic and lifestyle aspects, genetic variants, and epigenetic markers.

    Methods and analysis The Brazilian PCOS study is being conducted in the outpatient clinics of eight university hospitals within the public healthcare network (Unified Health System) across the country. Additional centres will be included following completion of the research ethics approval process. The sample includes women with PCOS according to Rotterdam criteria at inclusion in the study and a control group of healthy women matched by age, socioeconomic status and geographical region. Data will be collected in each centre and incorporated into a unified cloud database. Clinical, demographic, socioeconomic, psychological, metabolic, epigenetic and genotypic variables will be evaluated. The data resulting from this study will be useful to guide specific public strategies for primary and secondary prevention of metabolic and reproductive comorbidities in the PCOS population of Brazil.

    Ethics and dissemination The study protocol was approved by each local Research Ethics Committee. Written informed consent will be obtained from each participant. During data collection, analysis and publication, care will be taken to ensure confidentiality of participant information. Study results will be published in peer-reviewed journals and disseminated at international conferences. This research protocol was registered with the Research Ethics Committee of HCPA, through Plataforma Brasil.

    Trial registration number CAAE 18082413.9.1001.5327

    • PCOS
    • polycystic ovary syndrome
    • Brazil
    • phenotypes
    • lifestyle
    • epigenetics

    This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See:

    View Full Text

    Statistics from


    • Collaborators Ana Luiza L Rocha; Edmund C Baracat; Gustavo A R Maciel; Gustavo M Soares; Hélio Haddad Filho; Ivanice Gemelli; Jose M Soares Junior; Ramon B Ramos; Sebastião F de Medeiros; Técia M O Maranhão.

    • Contributors PMS conceived the study. PMS, LBM, BRS and FVC contributed to the design of the study. PMS, LBM, BRS, FVC, KO, RMR, RAF, RVW, RMM, ALC and FMR contributed to data collection and/or analysis and interpretation of data. PMS, LBM, BRS and FMR drafted and critically revised the manuscript for important intellectual content. All the authors contributed to the further writing of the manuscript and approved the final version.

    • Funding This work is supported by the Brazilian National Institute of Hormones and Women’s Health/Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq INCT), grant number 465482/2014-7 and Fundação de Amparo à Pesquisa do Rio Grande do Sul (FAPERGS INCT), grant number 17/2551-0000519-8.

    • Competing interests None declared.

    • Patient consent for publication Written informed consent is obtained from all participants.

    • Ethics approval The Brazilian PCOS study was approved by the Research Ethics Committees at all participating institutions.

    • Provenance and peer review Not commissioned; externally peer reviewed.

    Request Permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.