Commentary on "The association between serum vitamin D, fertility and semen quality: A systematic review and meta-analysis" [Int. J. Surg. 71 (2019) 101-109]

Ref ID	780
First Author	B. Hu
Journal	INTERNATIONAL JOURNAL OF SURGERY
Year Of Publishing	2021
URL	https://journals.lww.com/international-journal-of-surgery/Fulltext/2021/11000/Commentary_on__The_association_between_serum.2.aspx?casa_token=M4rSGbt25zAAAAAA:xi6a6aknjlvFyq9Dgk3HuWGUMB-eJZqhc-NyZkxjdCKEteEpP0jvC7KD5hiSj_H6iHF7K-4ELrchupOM8_Wi3Pd39WjjWNw
Keywords	Heterogeneity Vitamins and supplements Reproductive health Non-Cochrane reviews
Problem(s)	Inadequate analysis of heterogeneity
Number of systematic reviews included	1
Summary of Findings	The letter highlights concerns with the choice of statistical model used in a systematic review and meta-analysis of serum vitamin D, fertility and semen quality published in 2019 due to the clinical and methodological heterogeneity of the included studies.
Did the article find that the problem(s) led to qualitative changes in interpretation of the results?	Not Applicable
Are the methods of the article described in enough detail to replicate the study?	No