ReviewHeliyon2020
Epidemiology of low birth weight in Iran: A systematic review and meta-analysis.
Review in Heliyon, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Gender differences in survival among low birthweight newborns and infants in sub-Saharan Africa: a systematic review.International health · 2022Pooled it
- Thyroid dysfunction in Iranian pregnant women: a systematic review and meta-analysis.BMC pregnancy and childbirth · 2020Pooled it
- Trial
- Impact of health literacy and subjective happiness in pregnancy on neonatal anthropometry: a cohort study.Discover mental health · 2025Article
- Comparison of the short-term neonatal outcomes of preterm neonates before and after the launch of human milk bank in Iran: a retrospective descriptive study.BMC pediatrics · 2025Article
- Machine learning based prediction of low birth weight and its associated risk factors: Insights from the Bangladesh Demographic and Health Survey 2022.PLOS global public health · 2025Article
- The relationship between teamwork and moral distress among NICU nurses.BMC nursing · 2024Article
- Sociodemographic factors associated with immediate puerperal control: A cross-sectional study based on the Peruvian demographic and health survey, 2019.European journal of obstetrics & gynecology and reproductive biology: X · 2023Article
- Article
- A Comparative Cross-sectional Study on Prevalence of Low Birth Weight and its Anticipated Risk Factors.Global pediatric health · 2023Article
- Article
- Pregnancy as a Fundamental Determinant of Child Health: a Review.Current nutrition reports · 2022Review
- Association between Maternal Birth Weight and Gestational Diabetes Mellitus: A Systematic Review and Meta-Analysis.Journal of obstetrics and gynaecology of India · 2022Review
- Evaluation of maternal risk factors for preterm delivery in Fatemieh Hospital of Hamadan, Iran, 2019: A case-control study.Journal of family medicine and primary care · 2021Article
- National and subnational trends of birthweight in Peru: Pooled analysis of 2,927,761 births between 2012 and 2019 from the national birth registry.Lancet regional health. Americas · 2021Article
- Article
- Design, implementation, and evaluation of an innovative intelligence information management system for premature infants.Digital healthArticle
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionLow birth weight (LBW) is an important general health indicator. The present study was conducted to evaluate the prevalence and risk factors of LBW in Iran.
methodThis meta-analysis was reported based on the PRISMA guidelines. All stages were independently performed by two authors. This review is registered with PROSPERO (CRD42020163446). We searched epidemiological studies at international databases of Scopus, Embase, Science Direct, PubMed/Medline, CINAHL, EBSCO, Cochrane Library, Web of Science, and Google Scholar search engine, as well as Iranian databases of SID, IranDoc, Iranian National Library, Barakat Knowledge Network System, RICST and Magiran using MeSH keywords without time limit until 2019. After selecting the studies, applying the inclusion and exclusion criteria, data extraction and qualitative assessment, the data were analyzed based on random effects model using Comprehensive Meta-Analysis Software version 2. P < 0.05 was considered significant.
resultsThe prevalence of LBW in Iran was 7.95% (95% confidence interval [CI]: 7.36-8.58) in 62 studies with a sample size of 301,839 newborns. The prevalence of LBW in girls and boys was 8.41% (95%CI: 7.47-9.45) and 6.67% (95%CI: 5.86-7.59), respectively. The girls-to-boys odds ratio of LBW was 1.25 (95%CI: 1.13-1.39, P < 0.001) very LBW and extremely LBW prevalence was estimated to be 0.61% (95%CI: 0.40-0.93) and 0.29% (95% CI: 0.18-0.45), respectively. The risk factors for LBW were age of >35 versus [vs.] ≤35 (P = 0.024), age of <18 vs. ≥18 (P < 0.001), education of middle school and lower vs. high school and higher (P < 0.001), weight under 50 kg (P = 0.001), employed vs. housekeeper (P < 0.001), inadequate prenatal care (P = 0.046), interval with previous pregnancy <2 vs. >2 (P < 0.001), prematurity (P < 0.001), history of LBW (P < 0.001), multiple birth (P < 0.001), abortion (P < 0.001), vaginal bleeding (P < 0.001), hypertension (P = 0.001) and preeclampsia (P < 0.001).
conclusionThe results of this meta-analysis showed that LBW is prevalent in Iran. This study can be a national database for LBW that would be of interest to Iranian health policy-makers and planners.
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