Evidence map›Paper›PMID 32190375›Full record

ArticleSultan Qaboos University medical journal2020

Vitamin B12 Deficiency in Diabetic Patients on Metformin Therapy: A cross-sectional study from Oman.

Ahmed Al-Hamdi, Mohammed Al-Gahhafi, Shihab Al-Roshdi, Sanjay Jaju, Ali Al-Mamari, Abdulaziz M Al Mahrezi

Open access · diamondFull text readMulticenter Study
In one paragraph

Article in Sultan Qaboos University medical journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

9 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. 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

6 authors at 3 institutions in 1 country.

Ahmed Al-HamdiDirectorate of Health Services of North Batinah, Ministry of Health, Sohar, Oman.
Mohammed Al-GahhafiDirectorate General of Health Services of North Sharqiya, Ministry of Health, Mudhaibi, Oman.
Shihab Al-RoshdiDirectorate of Health Services of North Batinah, Ministry of Health, Saham, Oman.
Sanjay JajuDepartment of Family Medicine & Public Health, Sultan Qaboos University, Muscat, Oman.
Ali Al-MamariDepartment of Medicine, Sultan Qaboos University, Muscat, Oman.
Abdulaziz M Al MahreziDepartment of Family Medicine & Public Health, Sultan Qaboos University Hospital, Muscat, Oman.
Ministry of Health · OMSultan Qaboos University · OMSultan Qaboos University Hospital · OM

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThis study aimed to determine the prevalence of vitamin B12 deficiency amongst diabetic patients on metformin therapy.

methodsThis cross-sectional study was conducted at general clinics at the University Health Center and diabetes outpatient clinics at Sultan Qaboos University Hospital, Muscat, Oman, between January and December 2017. All Omani adults who were diagnosed with type 2 diabetes mellitus and took metformin were invited to participate in the study. The variables included in this study were age, gender, duration of diabetes, dose and duration of metformin therapy, haemoglobin and glycosylated haemoglobin level.

resultsA total of 248 subjects were included (response rate = 95.4%) of which 26 (10.5%) were vitamin B12 deficient and 53 (21.4%) were borderline deficient. The mean daily dose of metformin was highest among vitamin B12 deficient group (1,981 ± 222 mg;

conclusionThe prevalence of vitamin B12 deficiency is considerable among diabetic patients on metformin therapy. Further research is needed to confirm the need for routine screening and monitoring.

Indexed as

AdultAgedCross-Sectional StudiesDiabetes Mellitus, Type 2FemaleHumansHypoglycemic AgentsMaleMetforminMiddle AgedOmanPrevalenceVitamin B 12Vitamin B 12 DeficiencyHypoglycemic AgentsMetforminVitamin B 12MetforminOmanPrevalenceType 2 Diabetes MellitusVitamin B12 Deficiency

Identifiers

PMID32190375
PMCPMC7065694
OpenAlexW3011101933

What OpenQuestion holds

Textfull text, public
LicenceCC BY-ND
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.