Investigating Factors Related to the Occurrence of Premature Infants in the South of Iran: A Population-based Study

Reza Faryabi1, Mehran Nikvarz2, Mahdieh Ardaneh3, Rasoul Raesi4, Salman Daneshi1, *, Vahid Mashayekhi Mazar5
1 Department of Public Health, School of Health, Jiroft University of Medical Sciences, Jiroft, Iran
2 Department of Pediatrics, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran
3 Department of Epidemiology, School of Health, Tehran University of Medical Sciences, Tehran, Iran
4 Department of Health Services Management, Mashhad University of Medical Sciences, Mashhad, Iran
5 Deputy of Health, Jiroft University of Medical University, Jiroft, Iran

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© 2023 Faryabi et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Public Health, School of Health, Jiroft University of Medical Sciences, Jiroft, Iran;
Tel: 03443318337; E-mail:



Prematurity has been recognized worldwide as the leading cause of death in infants under 4 weeks of age for at least a decade. This study aimed to investigate the factors related to the occurrence of premature infants in the south of Iran in 2020.


In this cross-sectional study, the reporting of premature birth infants was done from the national system of the Ministry of Health (Iman). In the next step, according to the checklist made by the researcher, the information was extracted from the SIB system and completed by a survey of the mothers. Premature infants whose prematurity disorder occurred from March 21, 2019, to March 19, 2020, formed the study cohort. Analyses of the data used SPSS v 20 software, and the statistical significance level was set at <0.05.


In this study, 554 premature infants were examined, and about 55% of them were boys. The residence of the parent’s premature infants was the village (58.5%). The more common factors seen with PTBs were an unwanted pregnancy, hemoglobin less than 11, Body Mass Index (BMI) more than 30, pre-eclampsia, gestational diabetes, opium use in family members, history of cesarean section in previous pregnancies, low family monthly income, low education, and nonprofessional occupations of the mother and father.


Spontaneous premature infants were common in socially vulnerable groups, such as rural residents or people with low education and a poor economic situation. It is emphasized that the reduction of social and health inequalities will likely reduce premature birth rates.

Keywords: Risk factors, Premature, Infants, Population, Health, Prematurity disorder.