How to write an umbrella review? A step-by-step tutorial with tips and tricks

Bonczar, Michał; Ostrowski, Patryk; D’Antoni, Anthony V.; Tubbs, R. Shane; Iwanaga, Joe; Ghosh, Sanjib Kumar; Klejbor, Ilona; Kuniewicz, Marcin; Walocha, Jerzy; Moryś, J; Koziej, Mateusz

doi:10.5603/fm.a2022.0104

Cited by 11 publications

(12 citation statements)

References 6 publications

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“…A random‐effects model was made. To assess the heterogeneity among the studies, the Chi‐square test and the I‐squared statistic were conducted (Bonczar et al, 2022; Higgins et al, 2019). A p ‐value and confidence intervals were used to determine the statistical significance between studies.…”

Section: Methodsmentioning

confidence: 99%

The complete anatomy of the lingual nerve: A meta‐analysis with implications for oral and maxillofacial surgery

et al. 2023

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Lingual nerve (LN) injury during surgical procedures in the third molar region warrants a detailed study of its common pathway and important variations. Therefore, the objective of this study was to analyze and compile the multiple anatomical variations of the LN for use in oral and maxillofacial surgery. It is anticipated that the results of the present meta-analysis may help to minimize the possible complications when performing procedures associated with this anatomical entity. Major online databases such as PubMed, Web of Science, Scopus, Embase were used to gather all relevant studies regarding the LN anatomy. The results were established based on a total of 1665 LNs. The pooled prevalence of the LN being located below the lingual/ alveolar crest was found to be 77.87% (95% CI: 0.00%-100.00%). The LN was located above the lingual/ alveolar crest in 8.21% (95% CI: 4.63%-12.89%) of examined nerves. The most common shape of the LN was established to be round with a prevalence of 40.96% (95% CI: 23.96%-59.06%), followed by oval at 37.98% (95% CI: 23.98%-53.02%) and flat at 25.16% (95% CI: 12.85%-39.77%). In conclusion, we believe that this is the most accurate and up-to-date study regarding the anatomy of the LN. The LN was found to be located below the lingual/alveolar crest in 77.87% of the cases. Furthermore, the LN was found to enter the tongue under the submandibular duct in 68.39% of the cases. Knowledge about the anatomy of the LN is crucial for numerous oral and maxillofacial procedures such as during the extraction of the third molar.

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Section: Methodsmentioning

confidence: 99%

The complete anatomy of the lingual nerve: A meta‐analysis with implications for oral and maxillofacial surgery

et al. 2023

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“…A random effects model was used. The Chi‐square test and the I ‐squared statistic were chosen to assess the heterogeneity among the studies (Bonczar, Ostrowski, et al, 2022; Henry et al, 2016; Higgins et al, 2019). P‐values and confidence intervals were used to determine the statistical significance between the studies.…”

Section: Methodsmentioning

confidence: 99%

The anatomy of the atrioventricular nodal artery: A meta‐analysis with implications for cardiothoracic surgery and ablation procedures

et al. 2023

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The objective of the present meta‐analysis was to evaluate recent and applicable data regarding the location and variation of the atrioventricular nodal artery (AVNA) in relation to adjacent structures. In order to minimize postoperative risks and maintain physiological anastomosis for proper cardiac function, understanding such possible variations of vascularization of the AV node is of immense importance prior to cardiothoracic surgery as well as ablations. In order to perform this meta‐analysis, a systematic search was conducted in which all articles regarding, or at least mentioning, the anatomy of the AVNA was searched. In general, the results were based on 3919 patients. AVNA was found to originate only from the RCA in 82.41% (95% CI: 79.46%–85.18%). The pooled prevalence of AVNA originating only from LCA was found to be 15.25% (95% CI: 12.71%–17.97%). The mean length of AVNA was found to be 22.64 mm (SE = 1.60). The mean maximal diameter of AVNA at its origin was found to be 1.40 mm (SE = 0.14). In conclusion, we believe that this is the most accurate and up‐to‐date study regarding the highly variable anatomy of the AVNA. The AVNA was found to originate most commonly from the RCA (82.41%). Furthermore, the AVNA was found to most commonly have no (52.46%) or only one branch (33.74%). It is hoped that the results of the present meta‐analysis will be helpful for physicians performing cardiothoracic or ablation procedures.

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“…A random‐effects model was used in all analyses. The heterogeneity among the studies was evaluated, using both the Chi‐squared test and the I‐squared statistic 16,17 . The I‐squared statistic was interpreted as follows: 0%–40% as ‘might not be important’; 30%–60% as ‘may represent moderate heterogeneity’; 50%–90% as ‘may represent substantial heterogeneity’; 75%–100% as ‘may represent considerable heterogeneity’.…”

Section: Methodsmentioning

confidence: 99%

Renal agenesis: A meta‐analysis of its prevalence and clinical characteristics based on 15 641 184 patients

et al. 2023

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Our objective was to analyse the newest relevant data on worldwide prevalence and associated symptoms of renal agenesis (RA). This meta‐analysis builds on previous systematic reviews to include bilateral RA, its symptoms and data on gender, unilateral RA and anomaly location prevalence. Review of available data included records in English and other languages from PubMed, Embase, ScienceDirect, Web of Science, SciELO, BIOSIS, Current Content Connect Korean Journal Database and Russian Citation Index and Google. A total of 15 641 184 patients were analysed in relation to the prevalence of RA. The pooled prevalence of RA was 0.03% (95% CI: 0.03%–0.04%). Based on 500 subjects, a pooled prevalence of 47.96% (95% CI: 31.55%–64.58%) for unilateral and 52.04% (95% CI: 35.42%–68.45%) for bilateral RA has been set. Our study presents the newest generalized findings on bilateral RA. There appears to be universal disease and symptom prevalence with minor differences between world regions, although quality of future observational research should include genomic data. This will provide even further insight into the prognosis of various renal anomalies and their etiologies.

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How to write an umbrella review? A step-by-step tutorial with tips and tricks

Abstract: This article has been peer reviewed and published immediately upon acceptance.It is an open access article, which means that it can be downloaded, printed, and distributed freely, provided the work is properly cited. Articles in "Folia Morphologica" are listed in PubMed.

Cited by 11 publications

References 6 publications

The complete anatomy of the lingual nerve: A meta‐analysis with implications for oral and maxillofacial surgery

The complete anatomy of the lingual nerve: A meta‐analysis with implications for oral and maxillofacial surgery

The anatomy of the atrioventricular nodal artery: A meta‐analysis with implications for cardiothoracic surgery and ablation procedures

Renal agenesis: A meta‐analysis of its prevalence and clinical characteristics based on 15 641 184 patients

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