Assessing the risk factors before pregnancy of preterm births in Iran: a population-based case-control study

Soltani, Maryam; Tabatabaee, Hamid Reza; Saeidinejat, Shahin; Eslahi, Marzieh; Yaghoobi, Halimeh; Mazloumi, Ehsan; Rajabi, Abdolhalim; Ghasemi, Ali; Keyghobadi, Naeimeh; Enayatrad, Mostafa; Noori, Abed; Hashemi, Seyyed Aliasghar; Zolfizadeh, Fatemeh; Mahdavi, Sepideh; Valadbeigi, Tannaz; Etemad, Koorosh; Taghipour, Ali; Salehnasab, Cirruse; Hajipour, Mahmoud

doi:10.1186/s12884-019-2183-0

Cited by 24 publications

(23 citation statements)

References 40 publications

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“…The risk of preterm birth in women with a history of stillbirth was higher in the case group comparing with the control group. Soltani et al showed that the risk of preterm birth in women with a history of stillbirth was four times higher than women without it [1]. Malacova et al reported that the risk of preterm birth in women with a history of stillbirth was three to four times higher.…”

Section: Discussionmentioning

confidence: 99%

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

Hemmatpour

Mansori

Moradi

et al. 2020

Preprint

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Background: Preterm birth is one of the most common causes of mortality in infants. Despite advances in health care and better access to health services in many countries, preterm birth has increased over the past two decades. Methods: This case control study was conducted on two groups with 100 participants including 100 preterm infants (case) and 100 term infants (control) with gender match in Kurdistan Province-Iran in 2018. The required information was collected from medical files and interviewing the mothers as to demographical information, midwifery specifications, background diseases, disease over pregnancy term, and infants’ information. Conditional logistic regression test was used to estimate the final model and compute the risk ratio. Results: Multivariate regression analysis showed that the risk of preterm birth in individual with AB blood type was higher (OR=5.04; 95%; CI 1.40-18.08). In addition, the risk of preterm birth was higher in the mothers with a history of stillbirth (OR=13.63; 95% CI 1.39-133.5). Preterm birth was significantly related to the history of birth diseases, history of pregnancy diseases, and using medicine for specific diseases during pregnancy. Conclusions: Blood type of mother, history of still birth, history of birth disease, history of pregnancy diseases, using medicines for specific diseases, and history of preterm birth were the risk factors of preterm birth. These factors need to be taken into account before and during pregnancy. Paying more attention to these factors attenuates the rate of preterm birth and premature infants and in turn the mortality rate of infants and mothers.

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Section: Discussionmentioning

confidence: 99%

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

Hemmatpour

Mansori

Moradi

et al. 2020

Preprint

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“…Many studies have reported the association between maternal age and premature birth; both extreme ages either under 18 years or above 40 years are considered to be risk factors for premature birth [24][25][26][27]. Though the majority of the studies concluded that the older maternal age was associated with higher risk of premature birth, Ambrogio and colleagues in their study observed that both extreme ages that is, maternal age under 17 and advanced age over 40 were independent factors for premature birth (OR 2.97; 95%CI 1.24, 7.14 , P<0.005) [24].…”

Section: Discussionmentioning

confidence: 99%

Assessing the association between periodontitis and premature birth : A case control study

Uwambaye

Munyanshongore

Rulisa

et al. 2020

Preprint

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Background: Premature delivery is among the leading causes of perinatal mortality and morbidity in developed societies, which is an important obstetrics problem. Maternal periodontitis is a prevalent condition that has been suspected to be associated with adverse pregnancy outcomes such as premature birth. However, there are still conflicting results about this possible relationship, therefore this study was designed to test the association between maternal periodontitis and premature birth. This study also provides the information about a new screening tool recommended for use by nurses and midwives to screen for periodontal diseases during antenatal consultations in order to improve mothers’ and children’s health. Methods: A case-control study was conducted at 12 health facilities in the Southern Province of Rwanda from February to August, 2018. A total of 555 women in the postpartum period were enrolled in the study. Cases and controls were enrolled in a ratio of 1:2; each enrolled case of preterm birth was followed by 2 control subjects that were next on the register and who delivered at term gestation. A total of 185 cases of preterm deliveries and 370 controls of term delivery were enrolled in the study. Multivariate regression analysis was used and the independent variables were hierarchically entered in three groups: The first group involved demographic variables that were put in the regression model as Step 1. The second group was made up of other potential factors that were placed in the regression model as the second step. Periodontitis was entered in the final regression step, as it was hypothesized to be a major predictor variable. Results: A statistically significant association was found between periodontitis and premature birth. Women who had periodontitis had 6 times the odds of giving birth to premature birth infants compared to women who had no periodontitis (p<0.001) (OR=6.360, 95% CI 3.9, 10.4). Conclusion: The study results indicate that periodontitis is strongly associated with premature birth. Preventive solutions including the use of a periodontitis screening tool for nurses and midwives during antenatal care consultations, are highly recommended.

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“…Preterm child delivery is de ned as birth before the 37 th week or 259 th day of pregnancy and it has a key factor in mortality and morbidity in infants, children, and even adults [1][2][3]. Based on pregnancy age and according to the World Health Organization (WHO), preterm birth is categorized as highly preterm birth (before 28 th week), very preterm birth (28 th -32 nd week), and moderate and mild preterm birth (32 nd -37 th week) [4].…”

Section: Introductionmentioning

confidence: 99%

“…As shown by different studies, the prevalence of preterm birth in Asia ranges from 7.2% to 13.6% and 5.6% to 34.9% [6,7]. According to WHO (2018) the highest mortality rates of preterm infant (per 100 live births) were in Malawi (18.1), Comoros (16.7%), Kongo Preterm birth is a multi-cause event and it is related to genetic, environment, and immunology factors [1,9]. The main causes of preterm birth in the developing countries are infectious diseases and lack of access to health cares.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of developed countries, mothers' age and an increase in multiple pregnancy due to pregnancy medicines are the main causes of preterm birth [10,11]. Case-control studies in different provinces of Iran have shown that ethnicity, history of abortion and preterm birth, irregular menstrual cycle, cousin marriage, and pregnancies with short gap were the main causes of preterm birth [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

Hemmatpour

Mansori

Moradi

et al. 2020

Preprint

View full text Add to dashboard Cite

Background Preterm birth is one of the most common causes of mortality in infants. Despite advances in health care and better access to health services in many countries, preterm birth has increased over the past two decades. Methods This case control study was conducted on two groups with 100 participants including 100 preterm infants (case) and 100 term infants (control) with gender match in Kurdistan Province-Iran in 2018. The required information was collected from medical files and interviewing the mothers as to demographical information, midwifery specifications, background diseases, disease over pregnancy term, and infants’ information. Conditional logistic regression test was used to estimate the final model and compute the risk ratio. Results Multivariate regression analysis showed that the risk of preterm birth in individual with AB blood type was higher (OR=5.04; 95% CI 1.40-18.08). In addition, the risk of preterm birth was higher in the mothers with a history of stillbirth (OR=13.63; 95% CI 1.39-133.5). Preterm birth was significantly related to the history of birth diseases, history of pregnancy diseases, and using medicine for specific diseases during pregnancy. Conclusions Blood type of mother, history of still birth, history of birth disease, history of pregnancy diseases, using medicines for specific diseases, and history of preterm birth were the risk factors of preterm birth. These factors need to be taken into account before and during pregnancy. Paying more attention to these factors attenuates the rate of preterm birth and premature infants and in turn the mortality rate of infants and mothers.

show abstract

Assessing the risk factors before pregnancy of preterm births in Iran: a population-based case-control study

Cited by 24 publications

References 40 publications

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

Assessing the association between periodontitis and premature birth : A case control study

Assessing the risk factors of preterm births in Kurdistan, Iran: a case-control study

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