This problem is addressed in AMSTAR 2 (Q4), ROBIS (P2 D1) and MECIR (C19). Restricting included papers based on the language of publication is a common abbreviation is systematic review methodology. However it is possible that relevant studies published in other languages are missed and this could limit the generalisability of the review.
Articles that support this problem:
Quality of urological systematic reviews registered in PROSPERO
2019 : Bju international
How Often Do Systematic Reviews Exclude Articles Not Published in English?
2019 : Journal of general internal medicine
Heterogeneity in search strategies among Cochrane acupuncture reviews: is there room for improvement?
2010 : Acupuncture in medicine
Language of publication restrictions in systematic reviews gave different results depending on whether the intervention was conventional or complementary
2005 : Journal of clinical epidemiology
Quality assessment of systematic reviews on alveolar ridge preservation
2013 : Journal of the american dental association
Excluding non-English publications from evidence-syntheses did not change conclusions: a meta-epidemiological study
2020 : Journal of clinical epidemiology
Systematic reviews and meta-analyses of traditional Chinese medicine must search Chinese databases to reduce language bias
2013 : Evidence-based complementary and alternative medicine
Methodological quality of meta-analyses on treatments for chronic obstructive pulmonary disease: a cross-sectional study using the AMSTAR (Assessing the Methodological Quality of Systematic Reviews) tool
2015 : Npj primary care respiratory medicine
The inclusion of reports of randomised trials published in languages other than English in systematic reviews
2003 : Health technol assess
Systematic reviews with language restrictions and no author contact have lower overall credibility: a methodology study
2015 : Clinical epidemiology
Methodological quality and risk-of-bias assessments in systematic reviews of treatments for peri-implantitis
2019 : Journal of periodontal research
Reporting quality of search methods in systematic reviews of HIV behavioral interventions (2000–2010): are the searches clearly explained, systematic and reproducible?
2014 : Research synthesis methods
Searching additional databases except PubMed are necessary for a systematic review
2008 : Stroke
The prevalence of and factors associated with inclusion of non-English language studies in Campbell systematic reviews: a survey and meta-epidemiological study
2018 : Systematic reviews
Searching practices and inclusion of unpublished studies in systematic reviews of diagnostic accuracy
2020 : Research synthesis methods
Grey literature in systematic reviews: a cross-sectional study of the contribution of non-English reports, unpublished studies and dissertations to the results of meta-analyses in child-relevant reviews
2017 : Bmc medical research methodology
Epidemiology and Reporting Characteristics of Systematic Reviews of Biomedical Research: A Cross-Sectional Study
2016 : Plos medicine
Photodynamic therapy for root canal disinfection in endodontics: an umbrella review
2022 : Lasers in medical science
An analysis of data sources and study registries used in systematic reviews
2022 : World views on evidence based nursing
Restrictions and their reporting in systematic reviews of effectiveness: an observational study
2022 : Bmc medical research methodology