International Partners
The INTERSECT study partnership includes collaborators from over 50 countries. Principal investigators in each country are responsible for conducting the INTERSECT survey in their own country. Anonymised data from each country are then linked to create an international databank of information on traumatic birth and PTSD worldwide. The first dataset was released in 2024 and has data from 31 countries and 11,302 women. It is available on application through the UK Data Service. A second release of the dataset with more countries is planned for 2026. If you are interested in conducting INTERSECT in your country please email intersect@city.ac.uk.
The study will provide information on the cross-cultural prevalence of postpartum PTSD, as well as differences in the etiology and manifestation of childbirth-related PTSD worldwide.
Spain
Principal Investigators
Dr Rafael Caparros-Gonzalez
Collaborators
Dr Carmen Amezcua-Prieto, Dr Blanca Riquelme-Gallego, Pablo Asensio-Pastor, Pablo L. Martin-Tortosa
& Maria Reyes-Morillas
Institutions
Universidad de Granada, Hospital Universitario Poniente, Hospital Materno-Infantil, Centro Salud Gongora
Contribution to Dataset
Version 1 (2023)
Sweden
Principal Investigators
Dr Katri Nieminen & Dr Hanna Grundström
Collaborators
Anna Malmquist, Greta Sten
Institutions
Linköping University, Sweden
Contribution to Dataset
Version 1 (2023)
Switzerland
Principal Investigators
Prof Antje Horsch & Valentine Rattaz
Collaborators
Valentin Offrendi
Institutions
University of Lausanne, Switzerland
Contribution to Dataset
Version 1 (2023)
Taiwan
Principal Investigators
Chia-Fen Hsu
Collaborators
Huai-Hsuan Tseng, Hua-Pin Chang
Institutions
College of Medicine, National Cheng Kung University, Tainan; Asia University, Taichung
Contribution to Dataset
Version 2 (2026)
Türkiye
Principal Investigators
Dr Pelin Dikmen-Yildiz
Collaborators
Özlem Karabulut
Institutions
Kirklareli University, Zeynep Kamil Women and Children Diseases Training and Research Hospital
Contribution to Dataset
Version 1 (2023)
UK
Principal Investigators
Dr Rebecca Webb & Prof Susan Ayers
Collaborators
Nazihah Uddin, Dr Georgina Constantinou
Institutions
City St George's, University of London, UK
Contribution to Dataset
Version 1 (2023)
USA
Principal Investigators
Alissa Fox, Prof Sharon Dekel, Prof Maria Muzik, & Dr Joanna Koutanis
Collaborators
None
Institutions
University of Colorado Anschutz College of Nursing, Harvard University & University of Michigan
Contribution to Dataset
Version 2 (2026)
Ukraine
Principal Investigators
Prof. Liudmyla Krupelnytska & Prof. Volodymyr Artyomenko
Collaborators
Dr. Olha Morozova-Larina, Nazar Yatsenko, Dr. Magdalena Chrzan-Dętkoś & Natalia Murawska
Institutions
Taras Shevchenko National University of Kyiv, Odessa National Medical University & University of Gdańsk
Contribution to Dataset
Version 2 (2026)
United Arab Emirates
Principal Investigators
Dr Zahir Vally
Collaborators
None
Institutions
None
Contribution to Dataset
Version 1 (2023)
Vietnam
Principal Investigators
Bui Thi Hong Thai & Dang Thi Hoa
Collaborators
Trinh Thi Linh, Hoang Thanh Hue, Bui Thi Huong Tram & Nguyen Lam Hoang
Institutions
University of Social Sciences and Humanities in Hanoi, Institute of Sociology and Psychology
Contribution to Dataset
Version 2 (2026)
Zimbabwe
Principal Investigators
Dr Lazarus Kajawu
Collaborators
Linos Muvhu & Clayton Choga
Institutions
University of Zimbabwe, Zimbabwe
Contribution to Dataset
Version 2 (2026)
Supporting Organisations
"[Having] an international data bank that could be accessed by researchers worldwide would provide an enormously valuable resource… Such a databank would enable health systems to improve maternity care in ways that could reduce the elements that women find traumatic.” Birth Trauma Association