Evidence map›Paper›PMID 31700679›Full record

ArticleInternational journal of retina and vitreous2019

Serum vitamin D is a biomolecular biomarker for proliferative diabetic retinopathy.

Gauhar Nadri, Sandeep Saxena, Abbas Ali Mahdi, Apjit Kaur, Md Kaleem Ahmad, Pragati Garg, Carsten H Meyer

Open access · goldAbstract read
In one paragraph

Article in International journal of retina and vitreous, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 7% of its field
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Vitamin D and Ocular Diseases: A Systematic Review.International journal of molecular sciences · 2022
    Pooled it
  2. Review
  3. Article
  4. Impact of Vitamin D Deficiency and VDRFood science & nutrition · 2025
    Article
  5. Review
  6. Article
  7. Vitamin D and Diabetic Retinopathy.International journal of molecular sciences · 2023
    Review
  8. Review
  9. Review
  10. Review
  11. Article
  12. 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

7 authors at 2 institutions in 1 country.

Gauhar Nadri1Department of Ophthalmology, King George's Medical University, Lucknow, U.P 226003 India.
Sandeep Saxena1Department of Ophthalmology, King George's Medical University, Lucknow, U.P 226003 India.
Abbas Ali Mahdi2Department of Biochemistry, King George's Medical University, Lucknow, U.P 226003 India.
Apjit Kaur1Department of Ophthalmology, King George's Medical University, Lucknow, U.P 226003 India.
Md Kaleem Ahmad2Department of Biochemistry, King George's Medical University, Lucknow, U.P 226003 India.
Pragati Garg3Department of Ophthalmology, Era's Lucknow Medical College And Hospital, Lucknow, India.
Carsten H MeyerDepartment of Ophthalmology, Pallas Klinik, Aarau, Switzerland.
King George's Medical University · INEra's Lucknow Medical College and Hospital · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D is a multi-functional fat-soluble metabolite essential for a vast number of physiological processes. Non-classical functions are gaining attention because of the close association of vitamin D deficiency with diabetes, and its complications. The present study was undertaken to evaluate the role of vitamin D as a biomarker for proliferative diabetic retinopathy.

methodsA tertiary care center based cross-sectional study was undertaken. Seventy-two consecutive cases of type 2 diabetes mellitus were included. Diagnosis of diabetes mellitus was made using American Diabetes Association guidelines. Study subjects included: diabetes mellitus with no retinopathy (No DR) (n = 24); non-proliferative diabetic retinopathy (n = 24); and proliferative diabetic retinopathy (n = 24) and healthy controls (n = 24). All of the study subjects underwent complete ophthalmological evaluation. Best Corrected Visual Acuity (BCVA) was measured on the logarithm of the minimum angle of resolution (logMAR) scale. Serum 25-OH Vitamin D assay was done using chemiluminescent microparticle immunoassay technology. Diagnostic accuracy of vitamin D was assessed using receiver operating characteristics curve analysis and area under curve (AUC) was determined for the first time.

resultsANOVA revealed a significant decrease in serum vitamin D levels with severity of diabetic retinopathy (F = 8.95,

conclusionsSerum vitamin D levels of ≤ 18.6 ng/mL serve as sensitive and specific indicator for proliferative disease, among patients of DR.

Indexed as

Area under curveProliferative diabetic retinopathyReceiver operating characterstics curveVitamin D

Identifiers

PMID31700679
PMCPMC6829921
OpenAlexW2988954970

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.