ReviewIranian journal of medical sciences2018
High Prevalence of Vitamin D Deficiency among Iranian Population: A Systematic Review and Meta-Analysis.
Review in Iranian journal of medical sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 2 of them syntheses that pooled 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.
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.
Who cites it
82 citing papers in PubMed, 2 syntheses or guidelines pooled it, 139 citations in OpenAlex.
- Risk of suicide, suicide attempt, and suicidal ideation among people with vitamin D deficiency: a systematic review and meta-analysis.BMC psychiatry · 2025Pooled it
- Relationship between serum vitamin D and hip fracture in the elderly: a systematic review and meta-analysis.Journal of bone and mineral metabolism · 2022Pooled it
- Online positive-oriented counseling, taking vitamin D3 tablet, online lifestyle modification training on premenstrual syndrome: a 3-armed randomized clinical trial.Scientific reports · 2023Trial
- The effects of low-fat dairy products fortified with 1500 IU vitamin DJournal of health, population, and nutrition · 2023Trial
- The effect of vitamin D on the severity of dysmenorrhea and menstrual blood loss: a randomized clinical trial.BMC women's health · 2023Trial
- A randomized clinical trial to assess the effect of zinc and vitamin D supplementation in addition to hypertonic saline on treatment of acute bronchiolitis.BMC infectious diseases · 2022Trial
- Efficacy and safety of weekly vitamin DClinical rheumatology · 2021Trial
- HDL-C as a potential mediator between serum 25(OH)D and the angiographic severity of coronary artery disease: a single-center cross-sectional study.Clinics (Sao Paulo, Brazil) · 2026Article
- Investigating the Association Between Serum 25-Hydroxyvitamin D (25(OH)D) and Body Mass Index (BMI) With In Vitro Fertilization (IVF) Outcomes Among Iranian Women: A Case-Control Study.Health science reports · 2026Article
- SMART model-based social marketing intervention to improve vitamin d supplementation adherence in female university students: a quasi-experimental mixed-methods study.Scientific reports · 2026Article
- Association of VDR gene polymorphisms with prediabetes and Type 2 diabetes mellitus in a sample of the Iranian population.PloS one · 2026Article
- Maternal Vitamin D Deficiency and Its Effects on Pregnancy Outcomes.Food science & nutrition · 2026Article
- Vitamin D Nutritional Status in the Middle East and North Africa Region: A Systematic Review and Meta-analysis.Current developments in nutrition · 2025Article
- Developing optimal sustainable menus: a guide based on university menus in Tehran Province.BMC public health · 2025Article
- Shorter vs. longer biliopancreatic limbs in one-anastomosis gastric bypass: a comparative study of weight loss and nutritional outcomes.Langenbeck's archives of surgery · 2025Article
- Prevalence and determinants of hypovitaminosis D in early pregnancy: a cross-sectional study among first-trimester pregnant women.BMC pregnancy and childbirth · 2025Article
- Article
- Vitamin D Knowledge, Attitudes, Practices and Serum Concentration Among Pregnant Women Attending a Malaysian Tertiary Hospital.Food science & nutrition · 2025Article
- Article
- Effects of vitamin D3 supplementation on the recovery of hospitalized burn patients: a randomized double-blind controlled trial.BMC nutrition · 2025Article
22 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe prevention and correction of vitamin D deficiency requires a precise depiction of the current situation and identification of risk factors in each region. The present study attempted to determine these entities using a systematic review and meta-analysis in Iran.
methodsArticles published online in Persian and English between 2000 and November 1, 2016, were reviewed. This was carried out using national databases such as SID, IranMedex, Magiran, and IranDoc and international databases such as PubMed, Google Scholar, and Scopus. The heterogeneity index among the studies was determined using the Cochran (Q) and I
resultsThe meta-analysis of 48 studies identified 18531 individuals with vitamin D deficiency. According to the random-effect model, the prevalence of vitamin D deficiency among male, female, and pregnant women was estimated to be 45.64% (95% CI: 29.63 to 61.65), 61.90% (95% CI: 48.85 to 74.96), and 60.45% (95% CI: 23.73 to 97.16), respectively. The results of the meta-regression analysis indicated that the prevalence of vitamin D deficiency was significantly different in various geographical regions (β=4.4; P=0.023).
conclusionThe results obtained showed a significant prevalence of vitamin D deficiency among the Iranian population, a condition to be addressed by appropriate planning.
Indexed as
Identifiers
29749981PMC5936844W2739401700What OpenQuestion holds
Registered trials
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.