Prevalence of Neural Autoantibodies in Epilepsy of Unknown Etiology: Systematic Review and Meta-Analysis

Background: The prevalence of neural autoantibodies in epilepsy of unknown etiology varies among studies. We aimed to conduct a systematic review and meta-analysis to determine the pooled global prevalence and the prevalence for each antibody. Methods: A systematic search was conducted for studies that included prospectively patients ≥16 years old with epilepsy of unknown etiology and systematically determined neural autoantibodies. A meta-analysis was undertaken to estimate pooled prevalence in total patients with a positive result for at least one neural autoantibody in serum and/or cerebrospinal fluid (CSF) and for each autoantibody. Results: Ten of the eleven studies that met the inclusion criteria and a total of 1302 patients with epilepsy of unknown etiology were included in themeta-analysis. The global pooled prevalence (IC95%) was 7.6% (4.6–11.2) in a total of 82 patients with a positive result for any neural autoantibody. None of the controls available in the studies had a positive result. Individual pooled prevalence for each autoantibody was: glycine receptor (GlyR) (3.2%), glutamic acid decarboxylase (GAD) (1.9%), N-methyl-d-aspartate receptor (NMDAR) (1.8%), leucine-rich glioma inactivated-1 protein (LGI1) (1.1%), contactin-2-associated protein (CASPR2) (0.6%) and onconeuronal (0.2%). Conclusions: The pooled prevalence of neural autoantibodies in patients with epilepsy of unknown etiology is small but not irrelevant. None of the controls had a positive result. There was high heterogeneity among studies. In the future, a homogeneous protocol for testing neural autoantibodies is recommended.

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Prevalence of Invasive Streptococcus pneumoniae Infections among Iranian Children: A Systematic Review and Meta-Analysis

Iranian Journal of Public Health ◽

10.18502/ijph.v50i6.6412 ◽

2021 ◽

Author(s):

Arshid Yousefi Avarvand ◽

Mehrdad Halaji ◽

Donya Zare ◽

Meysam Hasannejad-Bibalan ◽

Hadi Sedigh Ebrahim-Saraie

Keyword(s):

Systematic Review ◽

Streptococcus Pneumoniae ◽

Web Of Science ◽

Data Extraction ◽

Meta Analysis ◽

Single Center ◽

Inclusion Criteria ◽

Pooled Prevalence ◽

Iranian Children ◽

The Web

Background: Streptococcus pneumoniae is an important pathogen of children, mostly in developing countries. We aimed to investigate the prevalence of invasive S. pneumoniae among Iranian children using a systematic review and meta-analysis. Methods: A systematic search was carried out to identify papers published by Iranian authors in the Web of Science, PubMed, Scopus, and Google Scholar electronic databases from January of 2010 to December of 2017. Then, seven publications that met our inclusion criteria were selected for data extraction and analysis. Results: Totally, one study was multicenter, and six were single-center based studies. Meanwhile, all of the included studied performed among hospitalized patients. Seven studies reported the prevalence of invasive S. pneumoniae isolated from children, of these the pooled prevalence of S. pneumoniae was 2.5% (95% CI: 0.7%-9.1%). Conclusion: The overall prevalence of invasive S. pneumoniae infections among Iranian children is low (2.5%). However, further clinical studies are required to elucidate the burden of infections among Iranian children, especially in eastern regions.

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The epidemiology of headaches among patients with epilepsy: a systematic review and meta-analysis

The Journal of Headache and Pain ◽

10.1186/s10194-020-1074-0 ◽

2020 ◽

Vol 21 (1) ◽

Cited By ~ 1

Author(s):

Bereket Duko ◽

Mohammed Ayalew ◽

Alemayehu Toma

Keyword(s):

Systematic Review ◽

Sensitivity Analysis ◽

Developing Countries ◽

Meta Analysis ◽

Tension Type Headache ◽

Future Research ◽

Epidemiologic Evidence ◽

Pooled Prevalence ◽

Type Headache ◽

Patients With Epilepsy

Abstract Background Headache is the symptom of pain in the face, head or neck that causes disability in most people with medical and neurological disorders. It frequently co-occurs with most chronic diseases such as epilepsy and significantly impacts the quality of life. However, epidemiologic data from different studies showed different rates of prevalence. Therefore, we conducted this review to summarize the available epidemiologic evidence on the topic and formulate recommendations for future research and clinical practice. Methods We followed the preferred reporting items for systematic review and meta-analysis (PRISMA) guidelines. We systematically searched the literature using popular databases such as PubMed, EMBASE, Psych-INFO, and SCOPUS. We further scanned the reference lists of the eligible studies to supplement our electronic search. The Comprehensive Meta-Analysis software version 3.0 (CMA 3.0) was used to conduct a meta-analysis. Subgroup and sensitivity analysis were performed and Cochran’s Q- and the I2- test were used to assess the source of heterogeneity. The funnel plot and Egger’s regression tests were used to assess potential publication bias. Results A total of 17 studies conducted both in developed and developing countries including 5564 study participants were combined in this meta-analysis. The pooled estimated prevalence of headache among patients with epilepsy was 48.4%. The pooled estimated prevalence of Inter-Ictal headache (IIH) (42.2%) and Postictal headache (PIH) (43.1%) were higher when compared to tension-type headache (TTH) (26.2%), migraine with aura (26.0%) and migraine without aura (10.4%). The pooled prevalence of headache was 50.6% and 49.5% for developed and developing countries respectively. The pooled prevalence of headache among patients with epilepsy was considerably higher among females (63.0%) when compared to males (33.3%). Moreover, the pooled estimated prevalence of headache among patients with epilepsy was ranging from 46.0% to 52.2% in a leave-one-out sensitivity analysis. Conclusion The pooled estimated prevalence of headache among patients with epilepsy was considerably high (48.4%). Screening and appropriate management of headaches among patients with epilepsy are warranted.

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Microbiological study of periodontal disease in populations with HIV: a systematic review and meta-analysis

10.21203/rs.3.rs-538808/v1 ◽

2021 ◽

Author(s):

Nasrin Keshavarz Valian ◽

Behzad houshmand ◽

Mohammadreza Talebi Ardakani ◽

Shima Mahmoudi

Keyword(s):

Systematic Review ◽

Periodontal Disease ◽

Meta Analysis ◽

Bacterial Species ◽

Fusobacterium Nucleatum ◽

Inclusion Criteria ◽

Campylobacter Rectus ◽

Pooled Prevalence ◽

High Prevalence ◽

Male Patients

Abstract Background: No systematic review/meta-analysis has been conducted on the microbiological profile associated with the occurrence of periodontitis in patients with HIV. The aim of this study was to evaluate the prevalence of identified bacteria in HIV-infected patients with periodontal disease.Methods: Three English electronic databases (MEDLINE (via PubMed), SCOPUS, and Web of Science) were searched systematically from the beginning to 13 February 2021. The frequency of each identified bacteria in HIV-infected patients with periodontal disease was extracted. All meta-analysis methods were performed using STATA software. Results: Twenty-two articles met inclusion criteria and enrolled into the systematic review. This review analyzed a total of 965 HIV-infected patients with periodontitis. The prevalence of periodontitis was higher in HIV-infected male patients (83% (CI95%: 76-88%)) compared to females (28% (CI95%: 17-39%)). In our study, the pooled prevalence of necrotizing ulcerative periodontitis and necrotizing ulcerative gingivitis in patients with HIV infection was 67% (CI95%: 52-82%) and 60% (CI95%: 45-74%), while a lower prevalence of linear gingivitis erythema was reported (11% (CI95%: 5-18%)). More than 140 bacterial species were identified from HIV-infected patients with periodontal disease. High prevalence of Tannerella forsythia (51% (CI95%: 5-96%)), Fusobacterium nucleatum (50% (CI95%: 21-78%)), Prevotella intermedia (50% (CI95%: 32-68%)), Peptostreptococcus micros (44% (CI95%: 25-65%)), Campylobacter rectus (35% (CI95%: 25-45%)), and Fusobacterium spp. (35% (CI95%: 3-78%)) in HIV-infected patients with periodontal disease was found.Conclusion: Our study demonstrated that the prevalence of red and orange complex of bacteria in HIV patients with periodontal disease is relatively high.

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Clinical Features of COVID-19 Patients in the First Year of Pandemic: A Systematic Review and Meta-Analysis

Biological Research For Nursing ◽

10.1177/10998004211055866 ◽

2021 ◽

pp. 109980042110558

Author(s):

Mohammed Al Maqbali ◽

Khalid Al badi ◽

Mohammed Al Sinani ◽

Norah Madkhali ◽

Geoffrey L. Dickens

Keyword(s):

Systematic Review ◽

Clinical Symptoms ◽

Meta Analysis ◽

First Year ◽

Random Effects Model ◽

Risk Of Infection ◽

Limited Data ◽

Inclusion Criteria ◽

Pooled Prevalence ◽

And Control

Background The new coronavirus disease (COVID-19) carries a high risk of infection and has spread rapidly around the world. However, there are limited data about the clinical symptoms globally. The purpose of this systematic review and meta-analysis is to identify the prevalence of the clinical symptoms of patient with COVID-19. Methods A systematic review and meta-analysis were carried out. The following databases were searched: PubMed, CINAHL, MEDLINE, EMBASE, PsycINFO, medRxiv, and Google Scholar, from December 1st, 2019 to January 1st, 2021. Prevalence rates were pooled with meta-analysis using a random-effects model. Heterogeneity was tested using I-squared (I2) statistics. Results A total of 215 studies, involving 132,647 COVID-19 patients, met the inclusion criteria. The pooled prevalence of the four most common symptoms were fever 76.2% ( n = 214; 95% CI 73.9–78.5); coughing 60.4% ( n = 215; 95% CI 58.6–62.1); fatigue 33.6% ( n = 175; 95% CI 31.2–36.1); and dyspnea 26.2% ( n = 195; 95% CI 24.1–28.5). Other symptoms from highest to lowest in terms of prevalence include expectorant (22.2%), anorexia (21.6%), myalgias (17.5%), chills (15%), sore throat (14.1%), headache (11.7%), nausea or vomiting (8.7%), rhinorrhea (8.2%), and hemoptysis (3.3%). In subgroup analyses by continent, it was found that four symptoms have a slight prevalence variation—fever, coughing, fatigue, and diarrhea. Conclusion This meta-analysis found the most prevalent symptoms of COVID-19 patients were fever, coughing, fatigue, and dyspnea. This knowledge might be beneficial for the effective treatment and control of the COVID-19 outbreak. Additional studies are required to distinguish between symptoms during and after, in patients with COVID-19.

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Prevalence of Depression among Epileptic Patients and its Association with Drug Therapy: A Systematic Review and Meta-Analysis

10.1101/387571 ◽

2018 ◽

Author(s):

Getenet Dessie ◽

Henok Mulugeta ◽

Cheru Tessema Leshargie ◽

Fasil Wagnew ◽

Sahai Burrowes

Keyword(s):

Systematic Review ◽

Random Effects ◽

Meta Analysis ◽

Sub Saharan Africa ◽

Random Effects Model ◽

Pooled Prevalence ◽

Prevalence Of Depression ◽

Epileptic Patients ◽

Sub Saharan ◽

Patients With Epilepsy

AbstractBackgroundDespite the high prevalence of epilepsy in sub-Saharan Africa and the established relationship between depression and epilepsy, the extent of comorbid epilepsy and depression in the region is still poorly understood. This systematic review and meta-analysis aims to address this gap in the literature by determining the pooled prevalence of depression among epileptic patients in sub-Saharan Africa.MethodsA systematic desk review and electronic web-based search of PubMed, Google Scholar, EMBASE, PsycINFO and the World Health Organization’s Hinari portal (which includes the SCOPUS, African Index Medicus, and African Journals Online databases) identified peer-reviewed research studies and doctoral dissertations on the prevalence of depression among patients with epilepsy using pre-defined quality and inclusion criteria. Relevant data were extracted and descriptive summaries of the studies presented in tabular form. The I2 test was used to assess heterogeneity across studies. A random effects model was used to estimate the pooled prevalence of comorbidity at a 95% confidence interval (CI). Funnel plot asymmetry and Egger’s tests were used to check for publication bias. The final effect size was determined by applying a trim and fill analysis in a random-effects model.ResultsOur search identified 167 studies, of which 16 articles were eligible for inclusion the final analysis. The pooled estimate of prevalence of depression among patients with epilepsy was 32.71 (95% CI: 25.50 - 39.91). Regional sub-group analysis found that the pooled prevalence in East Africa was 34.52 (95% CI: 23.53 - 45.51) and 29.69 (95% CI: 22.7 - 36.68) in Southern and West Africa. The odds of depression among epileptic patients receiving polytherapy were 2.65 higher than in those receiving monotherapy (95% CI: 1.49 - 4.71, I2=79.1%, p < 0.05).ConclusionOur findings indicate high comorbidity in sub-Saharan Africa and suggests that it may be more prevalent there than elsewhere. Comorbidity is statistically associated with polytherapy. Given the high levels of epilepsy in the region, more attention should be paid to incorporating depression screening and treatment into existing epilepsy programs and to revising treatment guidelines on comorbid depression to reduce polytherapy.

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The prevalence of molar-incisor hypomineralization: a systematic review and meta-analysis

Scientific Reports ◽

10.1038/s41598-021-01541-7 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Luísa Bandeira Lopes ◽

Vanessa Machado ◽

Paulo Mascarenhas ◽

José João Mendes ◽

João Botelho

Keyword(s):

Systematic Review ◽

Methodological Quality ◽

Meta Analysis ◽

Significance Test ◽

Case Definition ◽

Unknown Etiology ◽

Second Primary ◽

Contributing Factors ◽

Pooled Prevalence ◽

Molar Incisor Hypomineralization

AbstractMolar-Incisor Hypomineralization (MIH) is a qualitative defect of enamel of unknown etiology, affecting one or more permanent molars and may include incisors. This condition is a clinical challenge and its prevalence is still uncertain given the recent increase in research. Thus, we aimed to comprehensively estimate the overall prevalence of MIH and associated characteristics. This systematic review is reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). We searched articles using PubMed, MEDLINE, CENTRAL, Web of Science, SciELO, LILACS and TRIP databases, until July 2021. Heterogeneity and publication bias were computed via I2 test statistics and Egger’s significance test, respectively. Random-effects meta-analysis of prevalence were processed. We used the Strength of Recommendation Taxonomy [SORT] to grading the strength of evidence. Overall, 116 observational studies were included, with one study with moderate methodological quality and the remaining of high methodological quality. Subgroup analysis confirmed an influence of not using the 2003 MIH case definition (p = 0.0066). The pooled prevalence of MIH was 13.5% (95% CI 12.0–15.1, I2 = 98.0%). Affected incisors were seen in 36.6% (95% CI 30.0–43.7, I2 = 92.5%) of the cases. Lastly, the prevalence of hypomineralization of the second primary molars was observed in 3.6% of the MIH cases (95% CI 1.9–6.8, I2 = 96.3%). America was the continent with highest prevalence (15.3, 95% CI 12.8–18.3, p < 0.001, I2 = 96.3%) and Asia had the lowest prevalence (10.7, 95% CI 8.5–13.5, p < 0.001, I2 = 98.7%), however no continental differences were found. Sample size and year of publication were slight contributing factors to the heterogeneity in the analysis. Overall, these results were classified with a SORT A recommendation.

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Prevalence of Splanchnic Vein Thrombosis in Pancreatitis: A Systematic Review and Meta-Analysis of Observational Studies

Gastroenterology Research and Practice ◽

10.1155/2015/245460 ◽

2015 ◽

Vol 2015 ◽

pp. 1-23 ◽

Cited By ~ 20

Author(s):

Wenda Xu ◽

Xingshun Qi ◽

Jiang Chen ◽

Chunping Su ◽

Xiaozhong Guo

Keyword(s):

Systematic Review ◽

Observational Studies ◽

Meta Analysis ◽

Splenic Vein ◽

Inclusion Criteria ◽

Splanchnic Vein Thrombosis ◽

Vein Thrombosis ◽

Pooled Prevalence ◽

Meta Analyses ◽

Acute And Chronic Pancreatitis

Splanchnic vein thrombosis (SVT) may be negatively associated with the prognosis of pancreatitis. We performed a systematic review and meta-analysis of literatures to explore the prevalence of SVT in pancreatitis. All observational studies regarding the prevalence of SVT in pancreatitis were identified via PubMed and EMBASE databases. The prevalence of SVT was pooled in the total of patients with pancreatitis. And it was also pooled in the subgroup analyses according to the stage and causes of pancreatitis, location of SVT, and regions where the studies were performed. After the review of 714 studies, 44 studies fulfilled the inclusion criteria. Meta-analyses showed a pooled prevalence of SVT of 13.6% in pancreatitis. According to the stage of pancreatitis, the pooled prevalence of SVT was 16.6% and 11.6% in patients with acute and chronic pancreatitis, respectively. According to the causes of pancreatitis, the pooled prevalence of SVT was 12.2% and 14.6% in patients with hereditary and autoimmune pancreatitis. According to the location of SVT, the pooled prevalence of portal vein, splenic vein, and mesenteric vein thrombosis was 6.2%, 11.2%, and 2.7% in pancreatitis. The prevalence of SVT in pancreatitis was 16.9%, 11.5%, and 8.5% in Europe, America, and Asia, respectively.

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The Prevalence of Olfactory and Gustatory Dysfunction in COVID-19 Patients: A Systematic Review and Meta-analysis

Otolaryngology ◽

10.1177/0194599820926473 ◽

2020 ◽

Vol 163 (1) ◽

pp. 3-11 ◽

Cited By ~ 78

Author(s):

Jane Y. Tong ◽

Amanda Wong ◽

Daniel Zhu ◽

Judd H. Fastenberg ◽

Tristan Tham

Keyword(s):

Systematic Review ◽

Clinical Course ◽

Meta Analysis ◽

Olfactory Dysfunction ◽

Random Effects Model ◽

Inclusion Criteria ◽

Literature Searches ◽

Pooled Prevalence ◽

Prevalence Estimates ◽

Novel Coronavirus

Objective To determine the pooled global prevalence of olfactory and gustatory dysfunction in patients with the 2019 novel coronavirus (COVID-19). Data Sources Literature searches of PubMed, Embase, and Scopus were conducted on April 19, 2020, to include articles written in English that reported the prevalence of olfactory or gustatory dysfunction in COVID-19 patients. Review Methods Search strategies developed for each database contained keywords such as anosmia, dysgeusia, and COVID-19. Resulting articles were imported into a systematic review software and underwent screening. Data from articles that met inclusion criteria were extracted and analyzed. Meta-analysis using pooled prevalence estimates in a random-effects model were calculated. Results Ten studies were analyzed for olfactory dysfunction (n = 1627), demonstrating 52.73% (95% CI, 29.64%-75.23%) prevalence among patients with COVID-19. Nine studies were analyzed for gustatory dysfunction (n = 1390), demonstrating 43.93% (95% CI, 20.46%-68.95%) prevalence. Subgroup analyses were conducted for studies evaluating olfactory dysfunction using nonvalidated and validated instruments and demonstrated 36.64% (95% CI, 18.31%-57.24%) and 86.60% (95% CI, 72.95%-95.95%) prevalence, respectively. Conclusions Olfactory and gustatory dysfunction are common symptoms in patients with COVID-19 and may represent early symptoms in the clinical course of infection. Increased awareness of this fact may encourage earlier diagnosis and treatment, as well as heighten vigilance for viral transmission. To our knowledge, this is the first meta-analysis to report on the prevalence of these symptoms in COVID-19 patients.

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Pooled estimate of vitamin D deficiency among pregnant women in India: a systematic review and meta-analysis

Journal of Health Population and Nutrition ◽

10.1186/s41043-021-00253-y ◽

2021 ◽

Vol 40 (1) ◽

Author(s):

Angeline Jeyakumar ◽

Vidhya Shinde ◽

Reshma Ravindran

Keyword(s):

Systematic Review ◽

Vitamin D ◽

Pregnant Women ◽

Vitamin D Deficiency ◽

Meta Analysis ◽

Health Concern ◽

Study Quality ◽

Care Services ◽

Pooled Prevalence ◽

Women In India

Abstract Background Vitamin D deficiency among pregnant women is a public health concern globally. In India, individual studies report high prevalence. However, lack of national data masks the true burden. This work determined the pooled prevalence of vitamin D deficiency among pregnant women in India through a systematic review of literature and meta-analysis. Methods Three different search engines yielded 15 eligible articles. Study quality was assessed by 10 different criteria and summary of study quality was categorized as per Cochrane standards. Meta-analysis was performed to estimate pooled prevalence of vitamin D deficiency among healthy pregnant women and heterogeneity among selected studies. A sample of n = 4088 was used to study the pooled prevalence among pregnant women. Results The random effects combined estimate was 32.35% (95% CI, (12.58–117.48). High heterogeneity (tau2 = 0.39, I2 = 100%) and high risk of bias was observed among the selected studies. The test for overall effect was observed to be z = 2.54(P = 0.01). Conclusion Pooled estimate > 30% emphasizes the need for screening through antenatal care services and initiate preventive measures to address the deficiency.

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Association between Oral Hygiene and Metabolic Syndrome: A Systematic Review and Meta-Analysis

Journal of Clinical Medicine ◽

10.3390/jcm10132873 ◽

2021 ◽

Vol 10 (13) ◽

pp. 2873

Author(s):

Cornelia Melinda Adi Santoso ◽

Fera Ketti ◽

Taufan Bramantoro ◽

Judit Zsuga ◽

Attila Nagy

Keyword(s):

Systematic Review ◽

Metabolic Syndrome ◽

Oral Hygiene ◽

Reference Lists ◽

Meta Analysis ◽

Tooth Brushing ◽

Inclusion Criteria ◽

Poor Oral Hygiene ◽

Dental Visits ◽

Substantial Heterogeneity

Emerging evidence has linked poor oral hygiene to metabolic syndrome (MetS), but previously, no summary of evidence has been conducted on the topic. This systematic review and meta-analysis aims to evaluate the associations of oral hygiene status and care with MetS. A systematic search of the PubMed and Web of Science databases from inception to March 17, 2021, and examination of reference lists was conducted to identify eligible observational studies. A random-effects model was applied to pool the effects of oral hygiene status and care on MetS. Thirteen studies met the inclusion criteria and had sufficient methodological quality. Good oral hygiene status (OR = 0.30 (0.13–0.66); I2 = 91%), frequent tooth brushing (OR = 0.68 (0.58–0.80); I2 = 89%), and frequent interdental cleaning (OR = 0.89 (0.81–0.99); I2 = 27%) were associated with a lower risk of MetS. Only one study examined the association between dental visits and MetS (OR = 1.10 (0.77–1.55)). Our findings suggested that there might be inverse associations of oral hygiene status, tooth-brushing frequency, and interdental cleaning with MetS. However, substantial heterogeneity for tooth-brushing frequency and inconsistent results for oral hygiene status in subgroup analyses were observed. There was insufficient evidence for the association between dental visits and MetS. Further longitudinal studies are needed to investigate these associations.

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