Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data

Alireza Zimorovat; Mohsen Mohammadi-Sartang; Reza Barati-Boldaji; Hamidreza Raeisi-Dehkordi

doi:10.1186/s12937-021-00681-w

Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data

Alireza Zimorovat, Mohsen Mohammadi-Sartang, Reza Barati-Boldaji, Hamidreza Raeisi-Dehkordi^*

^*Corresponding author for this work

Research output: Contribution to journal › Letter › Academic › peer-review

1 Citation (Scopus)

Abstract

We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we would like to ask the authors to address the mentioned limitations and to update the analysis in order to provide robust and trustful results. We are concerned that such meta-analyses may lead to the biased findings and conclusions.

Original language	English
Article number	22
Journal	Nutrition Journal
Volume	20
Issue number	1
DOIs	https://doi.org/10.1186/s12937-021-00681-w
Publication status	Published - Dec 2021
Externally published	Yes

Keywords

Anemia
Hemoglobin
Iron status
Letter to the editor
Vitamin D

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10.1186/s12937-021-00681-w

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title = "Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data",

abstract = "We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we would like to ask the authors to address the mentioned limitations and to update the analysis in order to provide robust and trustful results. We are concerned that such meta-analyses may lead to the biased findings and conclusions.",

keywords = "Anemia, Hemoglobin, Iron status, Letter to the editor, Vitamin D",

author = "Alireza Zimorovat and Mohsen Mohammadi-Sartang and Reza Barati-Boldaji and Hamidreza Raeisi-Dehkordi",

note = "Funding Information: The authors declared no potential conflicts of interest with respect to the research, and/or publication of this article. Arabi SM, Ranjbar G, Bahrami LS, Vafa M, Norouzy A. The effect of vitamin D supplementation on hemoglobin concentration: a systematic review and meta-analysis. Nutrition Journal. 2020 Dec 1;19 (1):11. Publisher Copyright: {\textcopyright} 2021, The Author(s).",

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doi = "10.1186/s12937-021-00681-w",

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T1 - Meta-analysis of vitamin D supplementation and hemoglobin concentration

T2 - methodological faults obscure the interpretation of the data

AU - Zimorovat, Alireza

AU - Mohammadi-Sartang, Mohsen

AU - Barati-Boldaji, Reza

AU - Raeisi-Dehkordi, Hamidreza

N1 - Funding Information: The authors declared no potential conflicts of interest with respect to the research, and/or publication of this article. Arabi SM, Ranjbar G, Bahrami LS, Vafa M, Norouzy A. The effect of vitamin D supplementation on hemoglobin concentration: a systematic review and meta-analysis. Nutrition Journal. 2020 Dec 1;19 (1):11. Publisher Copyright: © 2021, The Author(s).

PY - 2021/12

Y1 - 2021/12

N2 - We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we would like to ask the authors to address the mentioned limitations and to update the analysis in order to provide robust and trustful results. We are concerned that such meta-analyses may lead to the biased findings and conclusions.

AB - We read the review by Arabi et al. with great interest which tried to examine the effects of vitamin D supplementation on hemoglobin concentration. It seems that the article suffers from fundamental methodological issues and the conclusions are likely to be erroneous. In this regard, we would like to ask the authors to address the mentioned limitations and to update the analysis in order to provide robust and trustful results. We are concerned that such meta-analyses may lead to the biased findings and conclusions.

KW - Anemia

KW - Hemoglobin

KW - Iron status

KW - Letter to the editor

KW - Vitamin D

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SN - 1475-2891

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JO - Nutrition Journal

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Meta-analysis of vitamin D supplementation and hemoglobin concentration: methodological faults obscure the interpretation of the data

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Keywords

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