|Prevalence of Low Birth Weight in Iranian newborns: A Systematic Review and Meta-analysis|
|Nasibeh Sharifi1, Mahrokh Dolatian2, Azita Fathnezhad1, Reza Pakzad3, Zohreh Mahmoodi4, Fatemeh Mohammadi nasrabadi5|
|1PhD Candidate of Reproductive Health, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Department of midwifery & Reproductive Health, School of Nursing & Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3 PhD Student of Epidemiology, Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran
4Non-communicable Disease Research Center ,Alborz University of Medical Sciences, Karaj, Iran
5Department of Nutrition Sciences, School of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Keywords : Low birth weight, prevalence, Iran, Meta-analysis
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Objectives: Low birth weight (LBW) affects patients’ survival. It is also a credible sign of intra-uterine growth and the most common health indicator for assessing neonates’ health conditions. Present study conducted to determine the prevalence of LBW in Iran.
Materials and Methods: In this meta- analysis we reviewed studies conducted in Iran through literature search in electronic databases including SID, Magiran, Irandoc, Iranmedex, Pubmed [including Medline], Scopus, Web of science and Google Scholar. ‘Low birth weight’ and its synonyms were used as serach keywords in English and Farsi languages to retrieve articles published from 2000 and 2016. Lastly, 20 articles were included in this study after appraisal by using the Hoy et al.’s tool. The findings of the included studies were combined using a random model. Also, the heterogeneity of reported prevalence among articles was evaluated by Q test and I2 index, the data were analyzed by the STATA software.
Results: The total number of the samples was 43801 individuals. The prevalence of LBW was between 2.6-18.9 percent in some Iranian studies. According to the random effects model, total prevalence of LBW in Iran was estimated nine percent. (95% CI, 7-10%). Differences in prevalence of LBW in terms of year (b=-2 * 10 -3, p=0.154) and sample size (b=-4.02 * 10 -6 p=0.317) was not statistically significant.
Conclusion: Despite differences in the designs of the included studies, low birth weight had a high prevalence in Iran. Therefore, there is a need to the adoption of meticulous care policies during pregnancy. Also investigate the risk factors of LBW are required in the different areas of the Iran.
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