scholarly journals Plasmodium falciparum and Plasmodium vivax Prevalence in Ethiopia: A Systematic Review and Meta-Analysis

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Teshiwal Deress ◽  
Mekonnen Girma
Keyword(s):  
Systematic Review ◽  
Economic Development ◽  
Plasmodium Falciparum ◽  
Plasmodium Vivax ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Malaria Prevalence ◽  
Pooled Prevalence ◽  
Prevalence Estimates ◽  
Socio Economic Development

Background. Malaria is a protozoan disease caused by the Plasmodium species. Among the five Plasmodium species known to infect human beings, Plasmodium falciparum and Plasmodium vivax malaria are by far the most predominant and widely distributed in Ethiopia. Malaria is one of the leading causes of morbidity and mortality globally, particularly in the sub-Saharan countries including Ethiopia. It is also a major obstacle to socio-economic development in the country. Methods. Articles were searched from PubMed, Google Scholar, and Science Direct databases. The pooled prevalence estimates were analyzed using the DerSimonian-Laird random-effects model and the possible sources of heterogeneity were evaluated through subgroup analysis, metaregression, and sensitivity analysis. Publication bias was analyzed using funnel plots and Egger’s test statistics. The data management and analysis were done using STATA 15.1 version software. Results. Among 922 studies initially identified, thirty-five full-text articles fulfilled the inclusion criteria and included in the study. The combined, Plasmodium falciparum, Plasmodium vivax, and mixed infections pooled prevalence estimates were 25.8% (95% CI: 21.3, 30.4), 14.7% (95% CI: 11.4, 18.1), 8.7% (95% CI: 7.0, 10.4), and 1.2% (95% CI: 20.7, 29.9), respectively. Based on agro-ecological subgroup analysis, the highest malaria prevalence (37.6%) was obtained from studies conducted on mixed regions of low lands and midlands while the least (20.7%) was from low lands. In Ethiopia, malaria transmission is seasonal, variable, and coincides with the peak agricultural activities that greatly affected the country’s socio-economic development. Conclusions. This systematic review and meta-analysis showed a high malaria prevalence in Ethiopia. Therefore, previous prevention and control measures should be revised and/or strengthened as appropriate and new strategies should be implemented. In addition, technical, financial and material support, and coordination of the regional capacity building and logistics should be adequately implemented.

scholarly journals Prevalence of dog-mediated rabies in Ethiopia: a systematic review and Meta-analysis from 2010 to 2020

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Shiret Belete ◽  
Melke Meseret ◽  
Haileyesus Dejene ◽  
Ayalew Assefa
Keyword(s):  
Systematic Review ◽  
Subgroup Analysis ◽  
Addis Ababa ◽  
Public Awareness ◽  
Meta Analysis ◽  
Human Rabies ◽  
Individual Study ◽  
Pooled Prevalence ◽  
Prevalence Estimates ◽  
Vaccination Campaigns

Abstract Background Ethiopia accommodates the second largest number of human rabies deaths in Africa. This systematic review and meta-analysis aimed to summarize and pool estimates of dog-mediated rabies status in Ethiopia. Methods Published researches between 2010 and 2020 were comprehensively searched and the required information was extracted. The prevalence was estimated using the random-effects meta-analysis because higher heterogeneity between studies was expected. Results The pooled estimate of rabies was 32% (95% CI: 19–46%), with individual study prevalence estimates ranged from 1 to 78%. Studies were approximately weighted equally with individual weight ranging from 5.19–5.28%. Subgroup analysis indicated that the random pooled prevalence of rabies was 28% (95% CI: 0–81%) in animals and 33% (95% CI: 20–47%) in humans. Furthermore, a subgroup analysis across regions indicated that the pooled prevalence was 78% in Addis Ababa, 46% in Oromia, 40% in Tigray and 5% in Amhara regional states. No single study was reported from the country’s eastern and southern parts to be included in this meta-analysis. Conclusion The estimated pooled rabies prevalence was found high and showed varying among study regions. Therefore, focusing on mass dog vaccination campaigns and public awareness should be implemented to control the disease.

scholarly journals Prevalence of Dog-Mediated Rabies in Ethiopia: A Systematic Review and Meta-Analysis From 2010-2020

2021 ◽  
Author(s):  
Shiret Belete ◽  
Melke Meseret ◽  
Haileyesus Dejene ◽  
Ayalew Assefa
Keyword(s):  
Systematic Review ◽  
Subgroup Analysis ◽  
Public Awareness ◽  
Meta Analysis ◽  
Viral Disease ◽  
Data Availability ◽  
Human Rabies ◽  
Pooled Prevalence ◽  
Prevalence Estimates ◽  
Vaccination Campaigns

Abstract Background: Rabies is a lethal zoonotic viral disease mostly transmitted by dog-bite. Ethiopia accommodates the second largest number of human rabies deaths in Africa. The total number of animal rabies cases in Ethiopia is not known. This systematic review and meta-analysis aimed to summarize and pool estimates of dog-mediated rabies' status in Ethiopia. Methods: Published researches between the years 2010 to 2020 were comprehensively searched and the required information was extracted. The prevalence was estimated using the random-effects meta-analysis because higher heterogeneity between studies was expected. Results: The pooled estimate of rabies was 32% (95% CI: 19% - 46%), with individual study prevalence estimates ranged from 1% - 78%. Studies were approximately weighted equally with individual weight ranging from 5.19% - 5.28%. Subgroup analysis indicated that the random pooled prevalence of rabies based upon hosts affected was 28% (95% CI: 0% – 81%) in animals and 33% (95% CI: 20% - 47%) in humans. Furthermore, a subgroup analysis across regions indicated that the pooled prevalence in Amhara and Tigray regional states was 5% (CI: 3% - 8%) and 55% (CI: 21% - 86%), respectively. No single study was reported from the country's Eastern and Southern parts which might be due to the religious aspect that most Muslims do not keep dogs in this region. Thus, the regional differences in data availability may have led to an overestimation of some regions' estimates. Conclusion: The estimated pooled rabies prevalence was found high and showed varying among study regions. Therefore, focusing on mass dog vaccination campaigns and public awareness should be implemented to control the disease.

scholarly journals The high risk of malarial recurrence in patients with Plasmodium-mixed infection after treatment with antimalarial drugs: a systematic review and meta-analysis

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Aongart Mahittikorn ◽  
Frederick Ramirez Masangkay ◽  
Kwuntida Uthaisar Kotepui ◽  
Giovanni De Jesus Milanez ◽  
Manas Kotepui
Keyword(s):  
Systematic Review ◽  
Mixed Infection ◽  
Subgroup Analysis ◽  
Initial Treatment ◽  
Meta Analysis ◽  
Antimalarial Drugs ◽  
Secondary Outcome ◽  
Significant Heterogeneity ◽  
Pooled Prevalence ◽  
Significant Difference

Abstract Background Malaria mixed infections are often unrecognized by microscopists in the hospitals, and a delay or failure to treat Plasmodium-mixed infection may lead to aggravated morbidity and increased mortality. The present study aimed to quantify the pooled proportion and risk of malarial recurrences after the treatment of Plasmodium-mixed infection. The results of the study may provide benefits in the management of Plasmodium-mixed infection in co-endemic regions. Methods This systematic review and meta-analysis searched the international Prospective Register of Systematic Reviews (PROSPERO; ID = CRD42020199709), MEDLINE, Web of Science, and Scopus for potentially relevant studies in any language published between January 1, 1936, and July 20, 2020, assessing drug efficacy in patients with Plasmodium-mixed infection. The primary outcome was the pooled prevalence of Plasmodium parasitemia after initiating antimalarial treatment for Plasmodium-mixed infection. The secondary outcome was the pooled risk ratio (RR) of malarial recurrence in Plasmodium-mixed infection compared with those in Plasmodium falciparum and Plasmodium vivax mono-infection. The pooled analyses were calculated by random-effects meta-analysis. After the initial treatment in different days of recurrences (≤ 28 days or > 28 days), the risk of Plasmodium parasitemia was compared in subgroup analysis. Results Out of 5217 screened studies, 11 were included in the meta-analysis, including 4390 patients from six countries. The pooled prevalence of all recurrences of Plasmodium-mixed parasitemia was 30% (95% confidence interval (CI) 16–43; I2: 99.2%; 11 studies). The RR of malarial recurrence within 28 days after the initial treatment (clinical treatment failure) of Plasmodium-mixed parasitemia compared with the treatment of P. falciparum was 1.22 (p: 0.029; 95% CI 1.02–1.47; Cochran Q: 0.93; I2: 0%; six studies), while there was no significant difference in the risk of recurrence 28 days after initial treatment compared with the treatment of P. falciparum (p: 0.696, RR: 1.14; 95% CI 0.59–2.18; Cochran Q < 0.05; I2: 98.2%; four studies). The subgroup analysis of antimalarial drugs showed that significant malarial recurrence within 28 days was observed in patients treated with artemisinin-based combination therapies (ACTs) with no significant heterogeneity (p: 0.028, RR: 1.31; 95% CI 1.03–1.66; Cochran Q: 0.834; I2: 0%). Conclusions The present findings showed a high prevalence of malarial recurrence after the initial treatment of Plasmodium-mixed infection. Moreover, significant malaria recurrence of mixed infection occurred within 28 days after treatment with ACTs. Graphic Abstract

Prevalence of idiopathic REM behavior disorder: a systematic review and meta-analysis

SLEEP ◽  
2021 ◽  
Author(s):  
Calogero Edoardo Cicero ◽  
Loretta Giuliano ◽  
Jaime Luna ◽  
Mario Zappia ◽  
Pierre-Marie Preux ◽  
...  
Keyword(s):  
Systematic Review ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Random Effect Model ◽  
Behavior Disorder ◽  
Significant Heterogeneity ◽  
Pooled Prevalence ◽  
Screening Questionnaires ◽  
Meta Regression

Abstract Study Objectives To provide an overall estimate of the prevalence of idiopathic REM Sleep Behavior Disorder (iRBD). Methods Two investigators have independently searched the PubMed and Scopus databases for population-based studies assessing the prevalence of iRBD. Data about type of diagnosis (polysomnographic diagnosis, defined iRBD [dRBD]; clinical diagnosis, probable RBD [pRBD]), continent, age range of the screened population, quality of the studies, sample size, screening questionnaires and strategies have been gathered. A random effect model was used to estimate the pooled prevalence. Heterogeneity was investigated with subgroup analysis and meta-regression. Results From 857 articles found in the databases, 19 articles were selected for the systematic review and meta-analysis. According to the type of diagnosis, five studies identified dRBD cases given a pooled prevalence of 0.68% (95%CI 0.38-1.05) without significant heterogeneity (Cochran’s Q p=0.11; I 2 = 46.43%). Fourteen studies assessed the prevalence of pRBD with a pooled estimate of 5.65% (95%CI 4.29-7.18) and a significant heterogeneity among the studies (Cochran’s Q p&lt;0.001; I 2 = 98.21%). At the subgroup analysis, significant differences in terms of prevalence were present according to the quality of the studies and, after removing two outlaying studies, according to the continents and the screening questionnaire used. Meta-regression did not identify any significant effect of the covariates on the pooled estimates. Conclusion Prevalence estimates of iRBD are significantly impacted by diagnostic level of certainty. Variations in pRBD prevalence are due to methodological differences in study design and screening questionnaires employed.

Prevalence of chronic pain after spinal cord injury: a systematic review and meta-analysis

2021 ◽  
pp. rapm-2020-101960
Author(s):  
Christine Hunt ◽  
Rajat Moman ◽  
Ashley Peterson ◽  
Rachel Wilson ◽  
Stephen Covington ◽  
...  
Keyword(s):  
Systematic Review ◽  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Chronic Pain ◽  
Classification System ◽  
Meta Analysis ◽  
Risk Of Bias ◽  
Pooled Prevalence ◽  
Cord Injury ◽  
Prevalence Estimates

BackgroundThe reported prevalence of chronic pain after spinal cord injury (SCI) varies widely due, in part, to differences in the taxonomy of chronic pain. A widely used classification system is available to describe subcategories of chronic pain in SCI, but the prevalence of chronic pain in SCI based on this system is unknown.ObjectiveThe primary objective of this systematic review and meta-analysis is to determine the prevalence of chronic pain after SCI based on the International Spinal Cord Injury Pain (ISCIP) classification system.Evidence reviewA comprehensive search of databases from January 1980 to August 2019 was conducted. The risk of bias was assessed using a modified tool developed for uncontrolled studies. The Grading of Recommendations, Assessment, Development and Evaluation approach was used to assess certainty in prevalence estimates.FindingsA total of 1305 records were screened, and 37 studies met inclusion criteria. The pooled prevalence of overall chronic pain was 68% (95% CI 63% to 73%). The pooled prevalence of neuropathic pain in 13 studies was 58% (95% CI 49% to 68%); the pooled prevalence of musculoskeletal pain in 11 studies was 56% (95% CI 41% to 70%); the pooled prevalence of visceral pain in 8 studies was 20% (95% CI 11% to 29%) and the pooled prevalence of nociceptive pain in 2 studies was 45% (95% CI 13% to 78%). Meta-regression of risk of bias (p=0.20), traumatic versus non-traumatic etiology of injury (p=0.59), and studies where pain was a primary outcome (p=0.32) demonstrated that these factors were not significant moderators of heterogeneity. Certainty in prevalence estimates was judged to be low due to unexplained heterogeneity.ConclusionThis systematic review and meta-analysis extends the findings of previous studies by reporting the prevalence of chronic pain after SCI based on the ISCIP classification system, thereby reducing clinical heterogeneity in the reporting of pain prevalence related to SCI.

scholarly journals The Prevalence of Metabolic Syndrome in Ethiopian Population: A Systematic Review and Meta-analysis

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Sintayehu Ambachew ◽  
Aklilu Endalamaw ◽  
Abebaw Worede ◽  
Yalewayker Tegegne ◽  
Mulugeta Melku ◽  
...  
Keyword(s):  
Systematic Review ◽  
Type 2 Diabetes ◽  
Metabolic Syndrome ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Eligibility Criteria ◽  
Cross Sectional ◽  
The Metabolic Syndrome ◽  
Pooled Prevalence

Background. The metabolic syndrome is a clustering of hyperglycemia/insulin resistance, hypertension, dyslipidemia, and obesity which are risk factors for cardiovascular disease, type 2 diabetes and stroke, and all-cause mortality. The burden of metabolic syndrome is emerging alarmingly in low- and middle-income countries such as Ethiopia; however, there is lack of comprehensive estimation. This study aimed to determine the pooled prevalence of metabolic syndrome in Ethiopia. Methods. This systematic review and meta-analysis included original articles of observational studies published in the English language. Searches were carried out in PubMed, Google Scholar, and Africa Journals from conception to August 2020. A random-effects model was used to estimate the pooled prevalence of metabolic syndrome in Ethiopia. Heterogeneity was assessed using the I2 statistic. Subgroup analysis was also conducted based on sex/gender and study subjects. Egger’s test was used to assess publication bias. Results. Electronic and gray literature search retrieved 942 potentially relevant papers. After removing duplicates and screening with eligibility criteria, twenty-eight cross-sectional studies were included in this meta-analysis. The pooled prevalence of metabolic syndrome in Ethiopia was found to be 34.89% (95% CI: 26.77, 43.01) and 27.92% (95% CI: 21.32, 34.51) by using NCEP/ATP III and IDF criteria, respectively. The weighted pooled prevalence of metabolic syndrome was higher in females 36.74% (95% CI: 20.72, 52.75) and 34.09% (95% CI: 26.68, 41.50) compared to males 22.22% (95% CI: 14.89, 29.56) and 24.82% (95% CI: 18.34, 31.31) by using IDF and NCEP/ATP III criteria, respectively. Subgroup analysis based on the study subjects using NCEP/ATP III showed that the weighted pooled prevalence was 63.78%(95% CI: 56.17, 71.40), 44.55% (95% CI: 30.71, 52.38), 23.09% (95% CI: 19.74, 26.45), 20.83% (95% CI: 18.64, 23.01), and 18.45% (95% CI: 13.89, 23.01) among type 2 diabetes patients, hypertensive patients, psychiatric patients, HIV patients on HAART, and working adults, respectively. The most frequent metabolic syndrome components were low HDL-C 51.0% (95% CI: 42.4, 59.7) and hypertriglyceridemia 39.7% (95% CI: 32.8, 46.6). Conclusions. The findings revealed an emerging high prevalence of metabolic syndrome in Ethiopia. Therefore, early intervention is required for the primary prevention of the occurrence of metabolic syndrome and the further reduction of the morbidity and mortality related to it.

scholarly journals Current Cigarette Smoking and Its Predictors among School-Going Adolescents in East Africa: A Systematic Review and Meta-Analysis

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Nega Tezera ◽  
Aklilu Endalamaw
Keyword(s):  
Systematic Review ◽  
Cigarette Smoking ◽  
East Africa ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Current Cigarette Smoking ◽  
Inverse Variance ◽  
Pooled Prevalence ◽  
Current Cigarette ◽  
Specific Country

Background. In developing countries, tobacco smoking has its own contribution to the burden of noncommunicable causes of morbidity and mortality. Studies estimated the burden of cigarette smoking among school-going adolescents in different geographical areas of East Africa. However, due to discrepancies found among those different findings, there is no representative data about the burden of smoking in the continent. Objectives. This systematic review and meta-analysis aimed to assess the pooled prevalence of current cigarette smoking and its associated factors among school-going adolescents in East Africa. Methods. PubMed, Google Scholar, and the Web of Science Library were searched to access included articles. A weighted inverse-variance random-effects model was used to estimate the prevalence of current cigarette smoking. Variations in the pooled estimates of the prevalence were adjusted through subgroup analysis according to the specific country, where the study was conducted. Funnel plot and Egger’s regression test were used to check publication bias. STATA version 14 statistical software was used for meta-analysis. Results. A total of 26,875 school-going adolescents were included. The pooled prevalence of current cigarette smoking among school-going adolescents in East Africa was found to be 9.02% (95%CI: 6.34-11.70). Based on the subgroup analysis, current cigarette smoking among school-going adolescents was estimated at 9.8% in Kenya, 7.72% in Ethiopia, 10.83% in Uganda, 13.6% in Sudan, and 4% in Tanzania. Conclusions. This meta-analysis revealed that the prevalence of current cigarette smoking is increasing among school-going adolescents in East Africa. Therefore, countries have to realize sale prevention policies, establishing and/or strengthening antismoking campaigners designed for school-going adolescents, and providing training for teachers to be antismoking campaigners.

scholarly journals The Acceptance Rate Toward COVID-19 Vaccine in Africa: A Systematic Review and Meta-analysis

2021 ◽  
Vol 8 ◽  
pp. 2333794X2110487
Author(s):  
Addisu Dabi Wake
Keyword(s):  
Systematic Review ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Random Effect ◽  
Cochrane Review ◽  
Random Effect Model ◽  
Acceptance Rate ◽  
The People ◽  
Pooled Prevalence ◽  
Study Participants

Background: The Coronavirus Disease 2019 (COVID-19) pandemic remains serious public issue. COVID-19 vaccine is a vital strategy to prevent this critical pandemic. However, unwillingness to take this vaccine are key barriers to manage the COVID-19 pandemic. The control of this pandemic will depend principally on the people acceptance of COVID-19 vaccine. Therefore, this systematic review and meta-analysis was intended to determine the acceptance rate toward COVID-19 vaccine in Africa. Methods: African Journals OnLine, PubMed, Cochrane Review, HINARI, EMBASE, Google Scholar, Web of Science, and Scopus were used to retrieve related articles. The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines were used for this study. Random-effect model, a funnel plot, Egger’s test, I2 statistic, subgroup analysis was done. The study was performed by using a STATA version 11 statistical software. Results: A total of 22 studies with 33,912 study participants were included in this systematic review and meta-analysis. From this finding, the pooled prevalence of acceptance toward COVID-19 vaccine among adults in Africa was 48.93% (95% CI: [39.49, 58.37]). The subgroup analysis revealed that the pooled prevalence of COVID-19 vaccine acceptance among adults in Africa was highest (66.03%, 95% CI [62.84, 69.22]) in Southern Africa, and Lowest (24.28%, 95% CI [3.26, 45.30]) in Northern Africa. Conclusion: This study showed that the estimate of the pooled prevalence of acceptance toward COVID-19 vaccine among adults in Africa was very low. All concerned bodies should be actively involved to improve the acceptance rate of COVID-19 vaccine.

scholarly journals Prevalence of Occupational Related Upper and Low Back Musculoskeletal Disorders in Ethiopia: Systematic Review and Meta-Analysis

2021 ◽  
Author(s):  
Dechasa Adare Mengistu ◽  
Yohannes Mulugeta Demmu
Keyword(s):  
Systematic Review ◽  
Low Back Pain ◽  
Back Pain ◽  
Musculoskeletal Disorders ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Low Back ◽  
Pooled Prevalence ◽  
Study Population ◽  
One Year

Abstract Background: Occupational related musculoskeletal disorders (MSDs) are a major public health problem and result in the growing demands of healthcare service utilization, causing temporary and permanent disability and reduced quality of life. In developing countries, particularly in Ethiopia, there is no adequate evidence on the overall prevalence of occupational-related MSDs and remains less prioritized and empirically unrepresented. Thus, this study aimed to determine the pooled prevalence of occupational-related musculoskeletal disorders, particularly low and upper back musculoskeletal disorders in Ethiopia.Methods: This systematic review and meta-analysis considered studies conducted in Ethiopia, written in the English language, and published from 2017-2020. The articles were searched using the following electronic databases such as Web of Science, SCOPUS, PubMed, Google Scholar, CINAHL, Cochrane Library, African Index Medicus, African Journals Online database, and Science direct using a combination of Boolean logic operators, Medical Subject Headings, and main keywords. Quality assessment of the articles was done using the Joanna Briggs Institute Critical Appraisal tools to determine the relevance of articles to the study.Results: The current study found the pooled prevalence of occupational-related upper back pain and low back pain in the previous one year was 27.1% [95% of CI: 18.4, 37.9%] and 54.2% [95% of CI: 48.2, 60.0%] respectively. However, the pooled prevalence of occupational-related upper back pain in the previous one year after subgroup analysis based on publication year, study population, and study area was 43.8% [95% of CI: 39.3, 47.7%], 34.7%[95% of CI: 33.1, 36.2%] and 36.2% [95% of CI: 33.6, 39.0%] respectively while the pooled prevalence of occupational-related low back pain in previous one year based on subgroup analysis by publication year, study population, and study area was 61.8% [95% of CI: 58.9, 64.6%], 52.8% [95% of CI: 51.3, 54.3%] and 55.2% [95% of CI: 51.4, 59.0%] respectively.Conclusion: This systematic review and meta-analysis found that, more than half of the included study participants were experienced low back pain in the previous year, whereas more than one-fourth of the included participants were experienced upper back pain. Thus, applying occupational health and safety practices in the working environment plays an important role in reducing work-related MSDs and other occupational hazards.

scholarly journals A systematic review and meta-analysis of the prevalence of left ventricular non-compaction in adults

2019 ◽  
Vol 41 (14) ◽  
pp. 1428-1436 ◽  
Author(s):  
Samantha B Ross ◽  
Katherine Jones ◽  
Bianca Blanch ◽  
Rajesh Puranik ◽  
Kevin McGeechan ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Left Ventricular ◽  
Risk Of Bias ◽  
Physiological Adaptation ◽  
Pooled Prevalence ◽  
Prevalence Estimates ◽  
Pathological Disease ◽  
Cmr Imaging

Abstract Aims To assess the reported prevalence of left ventricular non-compaction (LVNC) in different adult cohorts, taking in to consideration the role of diagnostic criteria and imaging modalities used. Methods and results A systematic review and meta-analysis of studies reporting LVNC prevalence in adults. Studies were sourced from Pre-Medline, Medline, and Embase and assessed for eligibility according to inclusion criteria. Eligible studies provided a prevalence of LVNC in adult populations (≥12 years). Studies were assessed, and data extracted by two independent reviewers. Fifty-nine eligible studies documenting LVNC in 67 unique cohorts were included. The majority of studies were assessed as moderate or high risk of bias. The pooled prevalence estimates for LVNC were consistently higher amongst cohorts diagnosed on cardiac magnetic resonance (CMR) imaging (14.79%, n = 26; I2 = 99.45%) compared with echocardiogram (1.28%, n = 36; I2 = 98.17%). This finding was unchanged when analysis was restricted to studies at low or moderate risk of bias. The prevalence of LVNC varied between disease and population representative cohorts. Athletic cohorts demonstrated high pooled prevalence estimates on echocardiogram (3.16%, n = 5; I2 = 97.37%) and CMR imaging (27.29%, n = 2). Conclusion Left ventricular non-compaction in adult populations is a poorly defined entity which likely encompasses both physiological adaptation and pathological disease. There is a higher prevalence with the introduction of newer imaging technologies, specifically CMR imaging, which identify LVNC changes more readily. The clinical significance of these findings remains unclear; however, there is significant potential for overdiagnosis, overtreatment, and unnecessary follow-up.

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