In this article, to determine the main risk factors for the birth of premature babies, data from the developmental history of 66 premature babies (form No. 097/u), as well as birth histories (form No. 096/u), were analyzed. Simultaneously, women's social, somatic, and obstetric-gynecological history data were analyzed, and the significance of various forms of obstetric-gynecological pathology that complicated the course of this pregnancy was also identified. It has been proven that various forms of obstetric and gynecological pathology in women, the threat of termination of pregnancy, fetal envelopment by the umbilical cord, maternal body mass index, residence in the city and region have a significant impact on the birth of a child at 34-36 weeks.

late premature birth; risk factors; newborn; late premature birth.

Kiosov A.F. Late premature infants: epidemiological aspects, morbidity, management tactics.2019; (9): 19-24. https://doi.org/10.31550/1727-2378-2019-164-9-19-24

Timofeeva L.A., Kirtbaya A.R., Degtyarev D.N., Sharafutdinova D.R., Tsoy T.A., Karapetyan A.O. et al. Late premature babies: How much do they need specialized medical care? Neonatology: news, opinions, learning. 2016; (4): 94-101. https://elibrary.ru/xipnsr

Remneva O.V. Risk factors for premature birth. Transbaikal Medical Herald. 2020; (2): 115-25. https://doi.org/10.52485/19986173_2020_2_115

Korotaeva N.V. Analysis of maternal risk factors for premature birth of newborns with very low and extremely low body weight. Scientific and Medical Herald of Central Black Earth. 2023; (94): 64-72. https://elibrary.ru/loooek.

Beglov D.E. Risk factors for premature birth. Fundamental and Clinical Medicine. 2022; 7 (4): 8-17. https://doi.org/10.23946/2500-0764-2022-7-4-8-17

Medyannikova I.V. Maternal risk factors for premature birth. Problems of Reproduction. 2023; 29 (5): 85-91. https://doi.org/10.17116/repro20232905185.

Timofeeva L.A., Sharafutdinova D.R., Shakaya M.N., Lazareva V.V. Late premature babies: main risk factors and outcomes. Sechenov Bulletin. 2016; (3): 79-83. https://elibrary.ru/zqtucr

Della Rosa P.A., Miglioli C., Caglioni M., Tiberio F., Mosser K.H.H., Vignotto E., et al. Hierarchical procedure for selecting intrauterine and extrauterine factors for methodological validation of preterm birth risk assessment. BMC Pregnancy Childbirth. 2021;21 (1): 306. https://doi.org/10.1186/s12884-021-03654-3

Zierden H.C., Shapiro R.L., DeLong K., Carter D.M., Ensign L.M. Next generation strategies for preventing premature birth. Adv. Drug. Deliv. Rev. 2021; 174: 190-209.

Baer R.J., Yang J., Berghella V., Chambers C.D., Coker T.R., Kuppermann M., et al. Risk of premature birth by maternal age at first and second pregnancy and race/ethnicity. J. Perinat. Med. 2018; 46 (5):539-46. https://doi.org/10.1515/jpm-2017-0014.

Cornish R.P., Magnus M.C., Urhoj S.K., Santorelli G., Smi thers L.G., Odd D., et al. Maternal pre-pregnancy body mass index and risk of preterm birth: a collaboration using large routine health datasets. BMC Med. 2024; 22 (1): 10. https://doi.org/10.1186/s12916-023-03230.

Remneva O.V. Risk factors of preterm birth. Zabaikal'skii medical bulletin. 2020; (2): 115-25. https://doi.org/10.52485/1998 6173_2020_2_115 (in Russian)

Korotaeva N.V. Analysis of maternal risk factors for premature birth in newborns with very low and extremely low body weight. Scientific and Medical Bulletin of the Central Black Ground. 2023; (94): 64-72. https://elibrary.ru/loooek 6164-6