Conclusions
Patients with previous spontaneous preterm birth from 16 weeks onwards are at high risk for recurrent preterm birth and should be considered and treated as such with preventive measures. A short interpregnancy interval of 0-3 months was associated with a significantly increased risk for subsequent PTB and should be actively discouraged in these patients.
Acknowledgements No funding to report.
Disclosure statement:The authors report no relevant conflict of interest. See ICMJE disclosure of interest form.
Paper presentation information:Results were presented on February 10th 2023 in a poster session of the 43rd annual meeting of the SMFM (February 6th – 11th) in San Francisco.
Contribution to Authorship MAB and EIK proposed the research idea; MAB, EIK, AR and ALG were responsible for the design of the study. AR was responsible for retrieving the data from PERINED for the purposes of this study and analysis of retrieved data; ALG drafted the manuscript; AR, EIK, BMK, EP, MAO and MAB reviewed all versions of the article and contributed to the interpretation of the results. All authors were sent the paper as prepared for submission and approved the final version.
Ethics approvalPermission for usage of the PERINED data with the purpose of this study was obtained on July, 13 2021 (approval number 21.13).
Funding No funding to report.