Evidence map›Paper›PMID 25768737›Full record

SynthesisPloS one2015

Birth prevalence of neural tube defects and orofacial clefts in India: a systematic review and meta-analysis.

Komal Preet Allagh, B R Shamanna, Gudlavalleti V S Murthy, Andy R Ness, Pat Doyle, Sutapa B Neogi, Hira B Pant, Wellcome Trust- PHFI Folic Acid project team

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers, 11 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed, 11 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

57 citing papers in PubMed, 11 syntheses or guidelines pooled it.

  1. Analysing myopia in Europe: A comprehensive meta-analysis.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Pooled it
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  4. Incidence and risk factors of distal adjacent disc degeneration in adolescent idiopathic scoliosis patients undergoing fusion surgery: a systematic review and meta-analysis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2024
    Pooled it
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  6. Incidence of cardiac anomalies in congenital vertebral deformity: systematic review and meta-analysis of 2910 patients.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
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  12. Trial
  13. Article
  14. Care pathways for pediatric surgical conditions.World journal of pediatric surgery · 2026
    Article
  15. Article
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  18. Presentation and management of neural tube defects in the middle belt of Ghana.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2025
    Article
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  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Komal Preet AllaghSouth Asia Centre for Disability Inclusive Development and Research, Indian Institute of Public Health-Hyderabad, Public Health Foundation of India, Hyderabad, India.
B R ShamannaUniversity of Hyderabad, Hyderabad, India.
Gudlavalleti V S MurthySouth Asia Centre for Disability Inclusive Development and Research, Indian Institute of Public Health-Hyderabad, Public Health Foundation of India, Hyderabad, India.
Andy R NessNational Institute for Health Research Bristol Nutrition Biomedical Research Unit at University Hospitals Bristol NHS Foundation Trust and the University of Bristol, Bristol, United Kingdom; The UK National Institute for Health Research Bristol Nutrition Biomedical Research Unit in Nutrition, Diet and Lifestyle at University Hospitals Bristol NHS Foundation Trust and the University of Bristol and the School of Oral and Dental Sciences, University of Bristol, Bristol, United Kingdom.
Pat DoyleLondon School of Hygiene and Tropical Medicine, London, United Kingdom.
Sutapa B NeogiIndian Institute of Public Health-Delhi, Public Health Foundation of India, Delhi, India.
Hira B PantSouth Asia Centre for Disability Inclusive Development and Research, Indian Institute of Public Health-Hyderabad, Public Health Foundation of India, Hyderabad, India.
Wellcome Trust- PHFI Folic Acid project team

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundIn the last two decades, India has witnessed a substantial decrease in infant mortality attributed to infectious disease and malnutrition. However, the mortality attributed to birth defects remains constant. Studies on the prevalence of birth defects such as neural tube defects and orofacial clefts in India have reported inconsistent results. Therefore, we conducted a systematic review of observational studies to document the birth prevalence of neural tube defects and orofacial clefts.

methodsA comprehensive literature search for observational studies was conducted in MEDLINE and EMBASE databases using key MeSH terms (neural tube defects OR cleft lip OR cleft palate AND Prevalence AND India). Two reviewers independently reviewed the retrieved studies, and studies satisfying the eligibility were included. The quality of included studies was assessed using selected criteria from STROBE statement.

resultsThe overall pooled birth prevalence (random effect) of neural tube defects in India is 4.5 per 1000 total births (95% CI 4.2 to 4.9). The overall pooled birth prevalence (random effect) of orofacial clefts is 1.3 per 1000 total births (95% CI 1.1 to 1.5). Subgroup analyses were performed by region, time period, consanguinity, and gender of newborn.

conclusionThe overall prevalence of neural tube defects from India is high compared to other regions of the world, while that of orofacial clefts is similar to other countries. The majority of studies included in the review were hospital based. The quality of these studies ranged from low to moderate. Further well-designed, high quality community-based observational studies are needed to accurately estimate the burden of neural tube defects and orofacial clefts in India.

Indexed as

ParturitionCleft LipCleft PalateHumansIndiaNeural Tube DefectsPrevalence

Identifiers

PMID25768737
PMCPMC4358993

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.