Journal of Cardiovascular and Thoracic Research最新文献

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Reply to: Analysis of covariance and sample size calculation for comparing means in randomized controlled trials. 答复:随机对照试验中比较均值的协方差分析和样本量计算。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 Epub Date: 2023-12-30 DOI: 10.34172/jcvtr.2023.33034
Naimeh Mesri Alamdari, Samad Ghaffari, Neda Roshanravan
{"title":"Reply to: Analysis of covariance and sample size calculation for comparing means in randomized controlled trials.","authors":"Naimeh Mesri Alamdari, Samad Ghaffari, Neda Roshanravan","doi":"10.34172/jcvtr.2023.33034","DOIUrl":"10.34172/jcvtr.2023.33034","url":null,"abstract":"","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 4","pages":"269"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10862033/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139735356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contrast-induced nephropathy prediction following ST-elevation myocardial infarction: Missing links. st段抬高型心肌梗死后造影剂肾病预测:缺失环节。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.31706
Rohan Magoon, Brajesh Kaushal
{"title":"Contrast-induced nephropathy prediction following ST-elevation myocardial infarction: Missing links.","authors":"Rohan Magoon,&nbsp;Brajesh Kaushal","doi":"10.34172/jcvtr.2023.31706","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.31706","url":null,"abstract":"Dear Editor, The study by Ceylan and Yildirim outlining H2FPEF score as independent predictor of contrast-induced nephropathy (CIN) in ST-elevation myocardial infarction (STEMI) patients undergoing percutaneous coronary intervention (PCI), emerges as an exemplary research work.1 Nonetheless, considering the relevance of the research subject, additional insights into the topic would certainly interest the Journal readership. The authors retrospectively analyze the data of 355 patients, wherein one misses a comparative account of the serum albumin (SA) levels in the cohort developing CIN (n = 63) as opposed to those without CIN (n = 292).1 The importance of the former is heralded by the Wiedermann et al meta-analysis suggesting a causal association between hypoalbuminemia and acute kidney injury (AKI), emanating from a total of 43 studies and 68,262 subjects.2 Notably so, the meta-analysis included 8 studies with 4,344 patients combined from either cardiac surgical or PCI settings.2 More importantly, Murat et al retrospectively delineate significantly lower SA in their acute coronary syndrome (ACS) patients with contrast-induced AKI, or CI-AKI (n = 107) compared to those with normal renal function following PCI (n = 783) (3.52 ± 0.40 v/s 3.94 ± 0.39 mg/ dL, P < 0.001).3 Subsequent to a multivariate analysis, the group highlights SA as an independent CI-AKI predictor (OR; 95% CI: 0.177; 0.080-0.392, P < 0.001) in a research scenario demonstrating peculiar similarities to the Ceylan and Yildirim study.1,3 Ahead of the well-known pro-inflammatory links of both hypoalbuminemia and AKI, Wei et al elucidate a pivotal role of nutritional status in determining the eventual risk to contrast-induced renal injury in an elderly subset undergoing PCI.2-5 Indeed, the dual relationship of SA with malnutrition and inflammation cannot be overemphasized, particularly in advanced age.3,5 Moreover, whilst the inclusion of SA could have augmented the contextual research lucidity, the optimal CIN-predictive cut-off of the H2FPEF score might also require further consolidation given the recent literature in the subject (H2FPEF cut-off of 2.5 predicting CIN in ACS patients with 79.8% and 64.1% sensitivity-specificity in Ozbeyaz et al study vis-à-vis a CIN-predictive cut-off of 1.5 emanating from the Ceylan and Yildirim study and demonstrating a sensitivity-specificity of 64.0% and 72.1% in an exclusive STEMI cohort).1,6","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 1","pages":"67"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10278188/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9701507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Split right coronary artery with split posterior descending artery. 右冠状动脉分裂,后降支分裂。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.31744
Niraj Nirmal Pandey, Aprateem Mukherjee, Vineeta Ojha, Raghav Bansal, Sanjeev Kumar
{"title":"Split right coronary artery with split posterior descending artery.","authors":"Niraj Nirmal Pandey,&nbsp;Aprateem Mukherjee,&nbsp;Vineeta Ojha,&nbsp;Raghav Bansal,&nbsp;Sanjeev Kumar","doi":"10.34172/jcvtr.2023.31744","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.31744","url":null,"abstract":"<p><p>We report a case of an 87-year-old man where coronary CT angiography incidentally demonstrated a \"split\" right coronary artery (RCA) featuring a \"split\" posterior descending artery. This case focusses on the morphological description of this variant as well as its differentiation from a \"dual\" or \"duplicated\" RCA.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 1","pages":"65-66"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10278192/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9707718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Human cardiac organoids: A recent revolution in disease modeling and regenerative medicine. 人类心脏类器官:疾病建模和再生医学的最新革命。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.31830
Neda Roshanravan, Samad Ghaffari, Sepideh Bastani, Sara Pahlavan, Samira Asghari, Mohammad Amin Doustvandi, Sepideh Jalilzadeh-Razin, Mohammadreza Dastouri
{"title":"Human cardiac organoids: A recent revolution in disease modeling and regenerative medicine.","authors":"Neda Roshanravan,&nbsp;Samad Ghaffari,&nbsp;Sepideh Bastani,&nbsp;Sara Pahlavan,&nbsp;Samira Asghari,&nbsp;Mohammad Amin Doustvandi,&nbsp;Sepideh Jalilzadeh-Razin,&nbsp;Mohammadreza Dastouri","doi":"10.34172/jcvtr.2023.31830","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.31830","url":null,"abstract":"<p><p>Three-dimensional (3D) myocardial tissues for studying human heart biology, physiology and pharmacology have recently received lots of attention. Organoids as 3D mini-organs are created from multiple cell types (i.e. induced pluripotent stem cells (iPSCs) or embryonic stem cells (ESCs)) with other supporting co-cultured cells such as endothelial cells or fibroblasts. Cardiac organoid culture technologies are bringing about significant advances in organ research and allows for the establishment of tissue regeneration and disease modeling. The present review provides an overview of the recent advances in human cardiac organoid platforms in disease biology and for cardiovascular regenerative medicine.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 2","pages":"68-72"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10466470/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10491411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanical properties of the rabbit and human decellularized patches for well-tolerated/reinforced organ in cardiac tissue engineering. 用于心脏组织工程中耐受性良好/强化器官的兔和人脱细胞补片的机械特性。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 Epub Date: 2023-12-30 DOI: 10.34172/jcvtr.2023.32926
Maryam Mousavi Khatat, Saeideh Same, Keyvan Moharamzadeh, Jafar Soleimani Rad, Ahmad Mehdipour, Leila Roshangar
{"title":"Mechanical properties of the rabbit and human decellularized patches for well-tolerated/reinforced organ in cardiac tissue engineering.","authors":"Maryam Mousavi Khatat, Saeideh Same, Keyvan Moharamzadeh, Jafar Soleimani Rad, Ahmad Mehdipour, Leila Roshangar","doi":"10.34172/jcvtr.2023.32926","DOIUrl":"10.34172/jcvtr.2023.32926","url":null,"abstract":"<p><strong>Introduction: </strong>Natural decellularized patches have been developed as the therapeutic platform for the treatment of different diseases, especially cardiovascular disorders. Decellularized scaffolds (as both cell-seeded and cell-free patches) are broadly studied in heart tissue redevelopment in vivo and in vitro. The designed regenerative bio-scaffold must have desirable physicochemical properties including mechanical stiffness for load-bearing, and appropriate anatomical characteristics to mimic the native biological environment properly and facilitate tissue reconstruction. In this context, the current study was designed to investigate rabbit decellularized derma's similarity with human decellularized skin in terms of mechanical properties for cardiac tissue engineering application.</p><p><strong>Methods: </strong>Fifty two rabbit dermal specimens were provided and divided into two groups: the experimental (decellularized) group and the control (group). Similarly, twelve human skin specimens were divided into the experimental (decellularized) and control groups. Initially, the effect of decellularization on the mechanical performance of scaffolds was analyzed. Then, the mechanical strength of decellularized rabbit skin was compared to decellularized human derma by measuring the stress strain and Young's modulus of the samples.</p><p><strong>Results: </strong>The results showed that rabbit decellularized skin has a similar elastic range to human decellularized skin, despite being more elastic (<i>P</i>>0.05). In addition, after decellularization, both rabbit and human skin showed a non-significant decrease in elasticity (<i>P</i>>0.05). It is worth noting that the elasticity reduction in rabbit samples after skin decellularization was lower than in human samples.</p><p><strong>Conclusion: </strong>According to the results of this study and the similarities of rabbit decellularized derm to human skin and its advantages over it, along with the biological complexity of native cardiac ECM, this scaffold can be used as an alternative matrix for tissue-engineered cardiac patches.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 4","pages":"244-249"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10862031/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139735353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prevalence of metabolic syndrome in East Azerbaijan-Iran and its determinants factors. 东阿塞拜疆-伊朗代谢综合征的发病率及其决定因素。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 Epub Date: 2023-12-30 DOI: 10.34172/jcvtr.2023.31693
Ali Farshbaf Khalili, Shahryar Razzaghi, Zeinab Nikniaz, Leila Nikniaz, Ali Hossein Zeinalzadeh
{"title":"Prevalence of metabolic syndrome in East Azerbaijan-Iran and its determinants factors.","authors":"Ali Farshbaf Khalili, Shahryar Razzaghi, Zeinab Nikniaz, Leila Nikniaz, Ali Hossein Zeinalzadeh","doi":"10.34172/jcvtr.2023.31693","DOIUrl":"10.34172/jcvtr.2023.31693","url":null,"abstract":"<p><strong>Introduction: </strong>Metabolic syndrome (MetS) is a prevalent metabolic disorder with increasing prevalence attributed to extended life expectancy. This study aims to investigate MetS prevalence and its determinants in the East-Azerbaijan population.</p><p><strong>Methods: </strong>Conducted as a cross-sectional study within the East Azerbaijan region, this research is based on a major Lifestyle Promotion Project. The study encompasses 700 participants aged 15 to 65 years, representing the general population and selected using probability proportional to size multistage stratified cluster sampling. MetS diagnoses were conducted using the adult Panel III criteria. Data on socio-demographics, smoking status, and physical activity levels were collected through questionnaires.</p><p><strong>Results: </strong>Among participants, the mean age was 42.4±12.38 years, and the mean body mass index was 27.69±4.94 kg/m2. The MetS group exhibited higher mean age and body mass index compared to the non-MetS group (<i>P</i><0.001). The prevalence of MetS in the population was 34.2%, with higher rates in females (37.1%) compared to males (30.5%), though this difference wasn't statistically significant (<i>P</i>=0.11). Notably, a substantial distinction was observed between the two groups regarding education levels (<i>P</i><0.001).</p><p><strong>Conclusion: </strong>The study reveals a significant association between increasing age and higher prevalence of MetS. Furthermore, lower educational levels were linked to an elevated prevalence of MetS. While other socio-demographic factors didn't demonstrate statistically significant relationships, these findings emphasize the importance of targeted interventions and education in mitigating MetS risks.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 4","pages":"238-243"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10862039/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139735355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of ventricular function after total cavo-pulmonary derivation in adult patients: Interest of global longitudinal strain. 评估成年患者全腔肺衍生术后的心室功能:对整体纵向应变的兴趣
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 Epub Date: 2023-12-30 DOI: 10.34172/jcvtr.2023.32880
Kaouther Hakim, Nouha Mekki, Rihab Benothmen, Mokbli Malek, Jarray Abdelkader, Msaad Hela, Habiba Mizouni, Ouarda Fatma
{"title":"Assessment of ventricular function after total cavo-pulmonary derivation in adult patients: Interest of global longitudinal strain.","authors":"Kaouther Hakim, Nouha Mekki, Rihab Benothmen, Mokbli Malek, Jarray Abdelkader, Msaad Hela, Habiba Mizouni, Ouarda Fatma","doi":"10.34172/jcvtr.2023.32880","DOIUrl":"10.34172/jcvtr.2023.32880","url":null,"abstract":"<p><p>Ventricular dysfunction is the most frequent complication in adult patients post-Fontan completion. Through this work, we aim to evaluate ventricular systolic function by conventional echographic parameters and by global longitudinal strain (GLS) to determine the prediction of early ventricular systolic dysfunction. This is a prospective monocentric study enrolling 15 clinically stable adult Fontan patients with preserved ejection fraction (EF). Myocardial deformation study by GLS with speckle tracking technique in addition to a standard Doppler transthoracic echocardiography (TTE) was performed. Cardiac magnetic resonance imaging (CMR) was also performed. A comparison of echocardiographic and CMR parameters was made. In comparison to CMR-derived EF, we found a significant correlation with GLS and TTE-derived EF (<i>P</i>=0.003 and 0.014). We divided our population into two groups based on the cut-off value of 50% of CMR derived EF. Comparison of GLS in both groups showed a significant correlation (<i>P</i>=0.003). A cut-off value of -13.3% showed sensitivity of 67% and specificity of 100%. GLS has a moderate diagnostic value for systolic myocardial dysfunction in the population of adult patients with Fontan circulation.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 4","pages":"262-268"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10862030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139735340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infective Endocarditis as a complication of COVID-19 infection; A case report and review of literature. COVID-19感染并发感染性心内膜炎病例报告及文献复习。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.31618
Khadije Mohammadi, Parya Soltani, Nazanin Davari
{"title":"Infective Endocarditis as a complication of COVID-19 infection; A case report and review of literature.","authors":"Khadije Mohammadi,&nbsp;Parya Soltani,&nbsp;Nazanin Davari","doi":"10.34172/jcvtr.2023.31618","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.31618","url":null,"abstract":"<p><p>COVID-19 has been known to induce systemic inflammation and hyper coagulate state leading to different complications. Cardiovascular complications are one of the most important among complications following COVID-19 infection. A 57 years old woman with past medical history of COVID-19 infection about two months ago came to our hospital with presentation of fever and dyspnea. During workup, tricuspid valve infection associated with pulmonary septic emboli was diagnosed without any obvious risk factor for infective endocarditis. It seems that COVID-19 infection may increase the rate of endocarditis in patients with or without risk factors of endocarditis.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 2","pages":"127-130"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10466469/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10491413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The approach of Iranian clinical pharmacists in the treatment of dyslipidemia based on international guidelines. 伊朗临床药师根据国际指南治疗血脂异常的方法。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.31585
Mehrzad Mirshekari, Nooshin Shirzad, Mahboobeh Hemmatabadi, Soha Namazi
{"title":"The approach of Iranian clinical pharmacists in the treatment of dyslipidemia based on international guidelines.","authors":"Mehrzad Mirshekari,&nbsp;Nooshin Shirzad,&nbsp;Mahboobeh Hemmatabadi,&nbsp;Soha Namazi","doi":"10.34172/jcvtr.2023.31585","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.31585","url":null,"abstract":"<p><p><b><i>Introduction:</i></b> Optimal treatment of dyslipidemia is a top priority in the prevention of cardiovascular diseases. For this purpose, clinicians in Iran usually refer to four current international guidelines. The aim of this study was to assess the approach of Iranian clinical pharmacists in the treatment of dyslipidemia based on international guidelines. <b><i>Methods:</i></b> A structured questionnaire was prepared. Questions (n=24) included the demographics (n=7), dyslipidemia references (n=3), dyslipidemia general knowledge of respondents (n=10), and questions (n=4) designed based on the difference among the latest version of guidelines participants stated they use in their practice. After validity conformation, the questionnaire was distributed to 120 clinical pharmacists, electronically from May to August 2021. <b><i>Results:</i></b> Response rate was 77.5% (n=93). The majority of participants (80.6%, n=75) claimed to have used the 2018 ACC/AHA guideline. The Median (interquartile range [IQR]) score of the general knowledge questions was 5.0 (2.0) out of 10. The Median (IQR) score of questions designed based on the difference among guidelines was calculated 3(1) out of 4. There was no significant (<i>P</i>=0.25) difference in score among participants according to their guideline selection. Moreover, the gender and length of experience as a clinical pharmacist had no significant (<i>P</i>>0.05) effect on the score of participants. <b><i>Conclusion:</i></b> In this study, Iranian clinical pharmacists answered half of the dyslipidemia general knowledge questions correctly. Also, Participants were up-to-date on 75% of the questions designed based on the latest version of the guideline they had been using in their practice.</p>","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 1","pages":"30-36"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10278195/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9701510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of covariance and sample size calculation for comparing means in randomized controlled trials. 随机对照试验中比较均数的协方差分析和样本量计算。
IF 1.1
Journal of Cardiovascular and Thoracic Research Pub Date : 2023-01-01 DOI: 10.34172/jcvtr.2023.30497
Yousef Alimohamadi, Mojtaba Sepandi
{"title":"Analysis of covariance and sample size calculation for comparing means in randomized controlled trials.","authors":"Yousef Alimohamadi,&nbsp;Mojtaba Sepandi","doi":"10.34172/jcvtr.2023.30497","DOIUrl":"https://doi.org/10.34172/jcvtr.2023.30497","url":null,"abstract":", We read the valuable manuscript with the title: Effects of sodium selenite and selenium-enriched yeast on cardiometabolic indices of patients with atherosclerosis: A double-blind randomized clinical trial study that published in J Cardiovasc Thorac Res. 1 Which seems to have shortcomings in the following cases: Firstly, about determined sample size the authors mentioned “ The sample size of the study was defined based on the mean ( ± standard deviation [SD]) of GPX with a confidence interval of 95% and power of 80 %, and estimation 10% of dropouts.” The authors used the sample size formula for estimation a single mean which is not applicable for analytical studies such as randomized control trials. The appropriate formula of sample size for comparing two means is as follows","PeriodicalId":15207,"journal":{"name":"Journal of Cardiovascular and Thoracic Research","volume":"15 2","pages":"131"},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10466466/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10491408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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