Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 415.911
Filtrar
1.
Recurso na Internet em Inglês, Português | LIS - Localizador de Informação em Saúde | ID: lis-48227

RESUMO

A Iniciativa Brasileira de Reprodutibilidade é uma iniciativa multicêntrica para estimar a reprodutibilidade da ciência biomédica brasileira. Financiada pelo Instituto Serrapilheira, nossa meta é reproduzir uma amostra de 60 a 80 experimentos de artigos brasileiros, inicialmente em 3 técnicas diferentes: ensaio de viabilidade celular por MTT, PCR quantitativo - RT-PCR e labirinto elevado em cruz). O sitio web traz informação sobre publicações, atividades, parcerias, eventos e outros projetos do grupo


Assuntos
Reprodutibilidade dos Testes , Pesquisa Biomédica
2.
Afr J Reprod Health ; 25(s1): 13-25, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34077141

RESUMO

The government in Saudi Arabia in 2016 declared the necessity to overcome the ancestral oil-based economy and move towards a more diversified model. One of the significant steps to achieve this goal is to empower Saudi women, who form half of the Saudi population, to actively contribute their much-needed talents and skills to the Saudi labour market. However, there is a scarcity of existing scales to measure women empowerment in Saudi Arabia. The objective of this study was to construct and validate a reliable novel scale for the empowerment of Saudi women employed in higher education institutions. A methodological study was conducted from January to April 2020 among Saudi women academic and administrative staff (n=160) working in the higher educational institutions located in the northwestern and southern regions of Saudi Arabia. The tool underwent content and face validity as well as factor analyses. Internal consistency was analyzed through Cronbach's alpha and Pearson correlation coefficient. The data analysis was conducted using IBM SPSS version 23. A Cronbach's alpha value of 0.94 was obtained in reliability analysis. The results showed that the total women empowerment scale had an exceptional internal consistency (>9). The three domains of the scale and total woman empowerment scale had a score close to 1, indicating a high Intraclass Correlation Coefficient, and showed a high similarity between values at the second and third measurements. Self-esteem and self-efficacy subscales were the most important indicators of women's' personal empowerment. Furthermore, a highly positive correlation (p <0.01) was found between the total domains of empowerment scale. A novel women empowerment tool was developed and validated in Saudi women working as academic and administrative staff. This can serve as a reliable tool to measure women's empowerment in higher education institutions. It will eventually enable the formulation of strategies that facilitate women's empowerment and pave the path for a strong foundation for the development of the country.


Assuntos
Empoderamento , Poder Psicológico , Inquéritos e Questionários/normas , Adulto , Análise Fatorial , Feminino , Humanos , Psicometria , Reprodutibilidade dos Testes , Arábia Saudita , Autoeficácia
3.
Anal Chim Acta ; 1170: 338606, 2021 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-34090584

RESUMO

We have developed an analytical procedure to measure the carbon isotopic composition of multiple compounds even when there is a partial overlap in the chromatographic profiles and applied this procedure to measure the carbon isotopic composition of different metabolites in human urine and exhaled breath. Method development and validation was performed with CRM IAEA-600 caffeine after calibration of the reference CO2 gas using a mixture of certified undecane, pentadecane and eicosane δ(13C) standards. The alternative data treatment procedure included the correction of time-lag between Faraday cup amplifiers (44 ms at mass 45 and -160 ms at mass 46), the calculation and correction of chromatographic isotope effects on each peak (isotope shifts) and the calculation of the isotope ratio for each compound using the linear regression slope procedure with data only at the top of the chromatographic peak. In that way, partial chromatographic overlap between different metabolites can be tolerated (resolution equal or higher than 1). The reproducibility (SD) of the carbon isotope composition of 93 metabolites in human urine (n = 8) from one volunteer was typically better than 0.5 δ(13C) (range 0.1-2.0 δ(13C), median 0.4 δ(13C)). The method was applied to follow the carbon isotope composition of different metabolites in human urine and exhaled breath after the oral administration of 100 mg of universally labelled 13C-glucose to another human volunteer. It was demonstrated that isotopically labelled compounds could be detected in both samples even 2 h after administration. So, the developed methodology can be applied to multiple types of samples containing a large number of partially overlapping analytes including environmental applications, anti-doping control or metabolomics studies, including the use of enriched isotope tracers.


Assuntos
Doping nos Esportes , Isótopos de Carbono , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Metabolômica , Reprodutibilidade dos Testes
4.
Anal Chim Acta ; 1170: 338630, 2021 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-34090590

RESUMO

Smartphone-assisted point-of-care (POC) bioassay has brought a giant leap in personal healthcare system and environmental monitoring advancements. In this study, we developed a rapid and reliable colorimetric urea biosensor assisted by a smartphone. We employed hydrolysis of urea into NH3 by urease, which activates the reduction power of tannic acid, to generate silver nanoparticles for a dramatic colorimetric response. The proposed urea biosensor was validated in a solution to provide high selectivity against various interferents in human urine. It had high sensitivity, with a limit of detection as low as 0.0036 mM, and a high reliability of 99% ± 2.9% via the standard addition method. The urea biosensor was successfully implanted on a paper to facilitate smartphone-assisted POC readout with a limit of detection of 0.58 mM and wide detection range of 500 mM, whereby direct diagnosis of human urine without dilution was realized. Our smartphone-assisted POC colorimetric urea biosensor will pave the way for daily monitoring systems of renal and hepatic dysfunction diseases.


Assuntos
Técnicas Biossensoriais , Nanopartículas Metálicas , Colorimetria , Humanos , Concentração de Íons de Hidrogênio , Sistemas Automatizados de Assistência Junto ao Leito , Reprodutibilidade dos Testes , Prata , Smartphone , Ureia
5.
Sensors (Basel) ; 21(9)2021 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-34063705

RESUMO

The screening and diagnosis of cancer are hallmarks of medicine in the aging population. Recently, microRNAs have shown potential for use as biomarkers, which could advance the field of diagnostics. The presence of miRNA-141 in the serum has been well described in several malignancies. However, the invasive approach used for sampling represents the major limitation for its practical application and, hence, its notable absence as a method for screening the general population. In light of this, we aimed to develop a high-sensitivity microRNA (miR) biosensor for application in the diagnosis of all miR-141-associated cancers, such as colorectal cancer (CRC) and breast cancer (BC). The novelty lies in our dual-probe design, which is reliant on the hybridization of the fluorescein isothiocyanate (FITC) targeting probe onto an existing sample of urinary miR-141 in the first step, followed by complementary binding with a biotinylated probe that has been coated on a modified screen-printed carbon electrode (SPCE). The hybridization of the probe and sensor produces signals via the catalytic reduction of H2O2 at HRP-modified SPCEs in the presence of H2O, which was measured by either cyclic voltammetry or chronoamperometry (CA) currents. In our study, the detection and expression of miR-141 in a cohort of colorectal cancer (n = 6) and breast cancer (n = 4) samples showed that its levels were significantly higher than in a healthy cohort (n = 9) (p < 0.004). Moreover, our miR sensor demonstrated high stability, reliability, and sensitivity (p < 0.0001). This work hopefully provides new information for the detection and monitoring of de novo and existing cancers.


Assuntos
Técnicas Biossensoriais , MicroRNAs/urina , Neoplasias/diagnóstico , Carbono , Técnicas Eletroquímicas , Eletrodos , Humanos , Peróxido de Hidrogênio , Reprodutibilidade dos Testes
6.
Chemosphere ; 276: 130204, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34088091

RESUMO

Heavy metals in water and wastewater are taken into account as one of the most hazardous environmental issues that significantly impact human health. The use of biochar systems with different materials helped significantly remove heavy metals in the water, especially wastewater treatment systems. Nevertheless, heavy metal's sorption efficiency on the biochar systems is highly dependent on the biochar characteristics, metal sources, and environmental conditions. Therefore, this study implicates the feasibility of biochar systems in the heavy metal sorption in water/wastewater and the use of artificial intelligence (AI) models in investigating efficiency sorption of heavy metal on biochar. Accordingly, this work investigated and proposed 20 artificial intelligent models for forecasting the sorption efficiency of heavy metal onto biochar based on five machine learning algorithms and bagging technique (BA). Accordingly, support vector machine (SVM), random forest (RF), artificial neural network (ANN), M5Tree, and Gaussian process (GP) algorithms were used as the key algorithms for the aim of this study. Subsequently, the individual models were bagged with each other to generate new ensemble models. Finally, 20 intelligent models were developed and evaluated, including SVM, RF, M5Tree, GP, ANN, BA-SVM, BA-RF, BA-M5Tree, BA-GP, BA-ANN, SVM-RF, SVM-M5Tree, SVM-GP, SVM-ANN, RF-M5Tree, RF-GP, RF-ANN, M5Tree-GP, M5Tree-ANN, GP-ANN. Of those, the hybrid models (i.e., BA-SVM, BA-RF, BA-M5Tree, BA-GP, BA-ANN, SVM-RF, SVM-M5Tree, SVM-GP, SVM-ANN, RF-M5Tree, RF-GP, RF-ANN, M5Tree-GP, M5Tree-ANN, GP-ANN) are introduced as the novelty of this study for estimating the heavy metal's sorption efficiency on the biochar systems. Also, the biochar characteristics, metal sources, and environmental conditions were comprehensively assessed and used, and they are considered as a novelty of the study as well. For this aim, a dataset of sorption efficiency of heavy metal was collected and processed with 353 experimental tests. Various performance indexes were applied to evaluate the models, such as RMSE, R2, MAE, color intensity, Taylor diagram, box and whiskers plots. This study's findings revealed that AI models could predict heavy metal's sorption efficiency onto biochar with high reliability, and the efficiency of the ensemble models is higher than those of individual models. The results also reported that the SVM-ANN ensemble model is the most superior model among 20 developed models. The predictive model proposed that heavy metal's efficiency sorption on biochar can be accurately forecasted and early warning for the water pollution by heavy metal.


Assuntos
Inteligência Artificial , Metais Pesados , Carvão Vegetal , Humanos , Aprendizado de Máquina , Reprodutibilidade dos Testes
7.
Zhongguo Yi Liao Qi Xie Za Zhi ; 45(3): 256-260, 2021 Jun 08.
Artigo em Chinês | MEDLINE | ID: mdl-34096231

RESUMO

In this study, through the analysis of the composition of domestic large radioactive medical equipment PET/CT and the characteristics of each subsystem, combing the vulnerable spots, according to the standard requirements of PET/CT for 10 years in its service life, we research the PET/CT service life's effectiveness. Firstly, this study introduces the concept of service life, the relationship between service life and risk analysis, the pivotal system composition of PET/CT, the importance of reliability of each component, the traditional test method to verify its reliability is researched. This study suggests a test procedure and method to prove the reliability of various components of PET/CT equipment during the service life. This method is described in detail, and the specific test process in practical engineering application is discussed, which proves that it is beneficial to ensure the effectiveness of PET/CT during the service life.


Assuntos
Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Tomografia por Emissão de Pósitrons , Reprodutibilidade dos Testes , Tomografia Computadorizada por Raios X
8.
Zhongguo Yi Liao Qi Xie Za Zhi ; 45(3): 261-265, 2021 Jun 08.
Artigo em Chinês | MEDLINE | ID: mdl-34096232

RESUMO

Based on the clinical application data of medical X-ray computed tomography (CT) in the Shanghai Sixth People's Hospital, this study transformed it into the product reliability index requirements, and took the mechanical representative component-examination table (hereinafter referred to as "patient table") and the electronic representative component-DCB (data control board) as examples. Based on the relationship between failure characteristics and clinical application data, a complete set of closed-loop implementation methods from reliability index requirements to reliability design and verification are discussed.


Assuntos
Tomografia Computadorizada por Raios X , China , Humanos , Reprodutibilidade dos Testes
9.
Viruses ; 13(6)2021 05 22.
Artigo em Inglês | MEDLINE | ID: mdl-34067361

RESUMO

Dried blood spots (DBS) are commonly used for serologic testing for viruses and provide an alternative collection method when phlebotomy and/or conventional laboratory testing are not readily available. DBS collection could be used to facilitate widespread testing for SARS-CoV-2 antibodies to document past infection, vaccination, and potentially immunity. We investigated the characteristics of Roche's Anti-SARS-CoV-2 (S) assay, a quantitative commercial assay for antibodies against the spike glycoprotein. Antibody levels were reduced relative to plasma following elution from DBS. Quantitative results from DBS samples were highly correlated with values from plasma (r2 = 0.98), allowing for extrapolation using DBS results to accurately estimate plasma antibody levels. High concordance between plasma and fingerpick DBS was observed in PCR-confirmed COVID-19 patients tested 90 days or more after the diagnosis (45/46 matched; 1/46 mismatched plasma vs. DBS). The assessment of antibody responses to SARS-CoV-2 using DBS may be feasible using a quantitative anti-S assay, although false negatives may rarely occur in those with very low antibody levels.


Assuntos
Teste Sorológico para COVID-19 , COVID-19/diagnóstico , Teste em Amostras de Sangue Seco , SARS-CoV-2/isolamento & purificação , Anticorpos Antivirais/sangue , Anticorpos Antivirais/imunologia , Humanos , Reprodutibilidade dos Testes , SARS-CoV-2/imunologia , Sensibilidade e Especificidade , Glicoproteína da Espícula de Coronavírus/imunologia
10.
BMC Med Inform Decis Mak ; 21(1): 179, 2021 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-34082729

RESUMO

BACKGROUND: Natural language processing (NLP) has a significant role in advancing healthcare and has been found to be key in extracting structured information from radiology reports. Understanding recent developments in NLP application to radiology is of significance but recent reviews on this are limited. This study systematically assesses and quantifies recent literature in NLP applied to radiology reports. METHODS: We conduct an automated literature search yielding 4836 results using automated filtering, metadata enriching steps and citation search combined with manual review. Our analysis is based on 21 variables including radiology characteristics, NLP methodology, performance, study, and clinical application characteristics. RESULTS: We present a comprehensive analysis of the 164 publications retrieved with publications in 2019 almost triple those in 2015. Each publication is categorised into one of 6 clinical application categories. Deep learning use increases in the period but conventional machine learning approaches are still prevalent. Deep learning remains challenged when data is scarce and there is little evidence of adoption into clinical practice. Despite 17% of studies reporting greater than 0.85 F1 scores, it is hard to comparatively evaluate these approaches given that most of them use different datasets. Only 14 studies made their data and 15 their code available with 10 externally validating results. CONCLUSIONS: Automated understanding of clinical narratives of the radiology reports has the potential to enhance the healthcare process and we show that research in this field continues to grow. Reproducibility and explainability of models are important if the domain is to move applications into clinical use. More could be done to share code enabling validation of methods on different institutional data and to reduce heterogeneity in reporting of study properties allowing inter-study comparisons. Our results have significance for researchers in the field providing a systematic synthesis of existing work to build on, identify gaps, opportunities for collaboration and avoid duplication.


Assuntos
Sistemas de Informação em Radiologia , Radiologia , Humanos , Aprendizado de Máquina , Processamento de Linguagem Natural , Reprodutibilidade dos Testes
11.
Anal Chim Acta ; 1169: 338628, 2021 Jul 18.
Artigo em Inglês | MEDLINE | ID: mdl-34088375

RESUMO

The detection of circulating tumor DNA (ctDNA) has increasingly received a great deal of attention considering its significance in cancer diagnosis. And the signal amplification plays an important role in the development of sensitive ctDNA biosensors. Herein, the nanocomposites (denoted as HAC-AuPt), integrating from high-active carbon (HAC) and AuPt alloy nanoparticles, were synthesized and subsequently used as a signal amplification label to fabricate a sandwich-type ctDNA electrochemical biosensor. Characterizations demonstrated that HAC presents uniform size distribution and AuPt alloy nanoparticles were successfully loaded on HAC. The current response could be amplified to a great extent by the resultant HAC-AuPt due to its excellent electrochemical property. The nanocomposites were further bounded with DNA signal probes (SPs) via Au-S or Pt-S assembly to form SPs-label. After the capture probes (CPs) were immobilized on the electrode surface, the target DNA (tDNA) and SPs-label were stepwise incubated on the CPs-modified electrode, thus forming a sandwich-type structure. By monitoring the catalytic signal of HAC-AuPt towards the reduction process of H2O2, this biosensor provided a wide linear range of 10-8 mol/L - 10-16 mol/L with a low detection limit of 3.6 × 10-17 mol/L (S/N = 3) for the detection of the tDNA. Furthermore, obvious differences in response signals among different DNAs were observed benefitting from the excellent selectivity of the biosensor. Besides, the long-term stability, reproducibility, and recovery rate were proved to be outstanding. These results indicate that the established biosensor holds a potential application in the clinical diagnosis of ctDNA.


Assuntos
Técnicas Biossensoriais , DNA Tumoral Circulante/análise , Grafite , Nanopartículas Metálicas , Ligas , Técnicas Eletroquímicas , Ouro , Peróxido de Hidrogênio , Limite de Detecção , Platina , Reprodutibilidade dos Testes
12.
J Spec Oper Med ; 21(2): 115-118, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34105135

RESUMO

BACKGROUND: Medical care provided by Special Operations Forces (SOF) combat medics is vital for establishing communication with local populations. In many of these communities, livestock hold a valuable position within the social, political, and cultural structure. The West Virginia University (WVU) Special Forces Medical Sergeant/Special Operations Independent Duty Corpsman (SFMS/SOIDC) Large Animal Module is designed to provide a foundational experience in livestock husbandry and veterinary procedures to SOF combat medic candidates. This study was conducted to determine the participants' base knowledge of food animal production and to evaluate if the program content was sufficient for increasing their knowledge of the subject matter. METHODS: A quasi-experimental design utilizing pre-test and post-test instruments was used. The validity of the testing instruments was established by a panel of subject matter experts and the instruments' reliability was determined by a split-half analysis using SPSS® statistical software. The difference between the pre-test and post-test examinations were compared for 66 candidates who were assigned to WVU Health Sciences Center for the applied medical experience program and 46 counterparts assigned to other institutions by a match pair analysis. RESULTS: Seventy-five percent of the subjects had no previous livestock exposure, and only 7% had previously participated in the 4-H program or Future Farmers of America (FFA). The average improvement in scores, pre-test versus post-test, was significantly greater for those that attended the module (18.5 versus 0.9). CONCLUSION: Few SFMS/SOIDC candidates have prior knowledge of livestock husbandry practices. The large animal module successfully provides education on livestock husbandry practice to participants. Knowledge of livestock production can assist SOF medics in establishing rapport with indigenous populations while on mission.


Assuntos
Militares , Animais , Humanos , Reprodutibilidade dos Testes
13.
Zhongguo Shi Yan Xue Ye Xue Za Zhi ; 29(3): 741-750, 2021 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-34105467

RESUMO

OBJECTIVE: To analyze gene expression profile of T cell lymphoma Jurkat cell line treated with paclitaxel by computational biology based on next generation sequencing and to explore the possible molecular mechanism of paclitaxel resistance to T cell lymphoma at gene level. METHODS: IC50 of paclitaxel on Jurkat cell line was determined by CCK-8 assay. Gene expression profile of Jurkat cells treated with paclitaxel was acquired by next generation sequencing technology. Gene microarray data related to human T cell lymphoma were screened from Gene Expression Omnibus (GEO) database (including 720 cases of T cell lymphoma and 153 cases of normal tissues). Combined with the sequencing data, differential expression genes (DEGs) were intersected and screened. DAVID database was used for enrichment analysis of GO function and KEGG pathway to determine and visualize functional entries of DEGs, and protein-protein interactions network of DEGs was drawn. The levels of gene expression were detected and verified by RT-qPCR. RESULTS: CCK-8 results showed that the proliferation of Jurkat cells was inhibited by paclitaxel depended on the concentration apparently. Treated by paclitaxel for 48 h, P<0.05 and |log2(FC)|≥1 were used as filter criteria on the results of RNA Sequencing (RNA-Seq) and GeoChip, 351 DEGs were found from Jurkat cells, including 323 up-regulated genes and 28 down-regulated genes. The GO functional annotation and KEGG pathway enrichment analysis showed that the role of paclitaxel was mainly concentrated in protein heterodimerization activity, nucleosome assembly and transcriptional dysregulation in cancer, etc. The results of RT-qPCR were consistent with those of the sequencing analysis, which verified the reliability of this sequencing. CONCLUSION: Paclitaxel can affect the proliferation and apoptosis of T-cell lymphoma by up-regulating JUN gene, orphan nuclear receptor NR4A family genes and histone family genes.


Assuntos
Linfoma de Células T , Paclitaxel , Biologia Computacional , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Reprodutibilidade dos Testes
14.
Codas ; 33(3): e20200044, 2021.
Artigo em Português, Inglês | MEDLINE | ID: mdl-34105615

RESUMO

PURPOSE: Cross-cultural adaptation to Brazilian Portuguese and evaluation of content validity of a patient decision aid to help in choosing the feeding route for patients with severe dementia entitled "Making Choices: Feeding Options for Patients with Dementia". METHODS: The cross-cultural adaptation involved two independent translations, synthesis of translations, two independent back-translations, their synthesis, and pretest with 30 caregivers. Content validation was based on analyzes of 35 Brazilian specialists (physicians, speech-language therapists and nurses experienced in caring for patients with severe dementia) through measures of content validity index and concordance between multiple judges by Fleiss' kappa. RESULTS: The level of comprehension of the instrument by caregivers in the pretest was almost perfect. The specialists committee considered the contents of the instrument valid, in a statistically significant way. CONCLUSION: The patient decision aid in Brazilian Portuguese entitled "Fazendo escolhas: opções de alimentação para pacientes com demência" obtained evidence of cross-cultural equivalence and content validity for use in the Brazilian population. Further studies are needed to assess its effects on the decision-making process in our population.


Assuntos
Comparação Transcultural , Demência , Brasil , Técnicas de Apoio para a Decisão , Humanos , Reprodutibilidade dos Testes , Inquéritos e Questionários , Traduções
15.
Artigo em Inglês | MEDLINE | ID: mdl-34065219

RESUMO

This article shows the levels of technostress in primary and secondary education teachers in Chile, in the context of educational telework that Chile has adopted in connection with the health crisis by COVID-19. The information has been collected with the use of the RED-TIC scale, previously used in this country, whose validity and reliability of the instrument has been treated, for this case, with confirmatory factorial analysis (CFA) with a national coverage sample of 3006 teachers. The results show that 11% of teachers reveal techno anxiety and 7.2%, techno fatigue. Combining both manifestations, we find that 6.8% of teachers are techno stressed. Finally, fatigue and anxiety factors are higher for female teachers.


Assuntos
COVID-19 , Chile/epidemiologia , Feminino , Humanos , Pandemias , Reprodutibilidade dos Testes , SARS-CoV-2 , Teletrabalho
16.
BMC Med Educ ; 21(1): 348, 2021 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-34134692

RESUMO

BACKGROUND: Training in psychiatry requires specific knowledge, attitudes, and skills that are obtainable by simulation, of which the use is only recent and still needs further development. Evidence is accumulating on its effectiveness but requires further validation for medical students. We aimed to evaluate the effectiveness of a single-day optional teaching program in psychiatry by simulation for medical students and validate a scale measuring Confidence in Psychiatric Clinical Skills (CPCQ), as part of the assessment. METHODS: This was a controlled study in a French University that compared (using paired-sample Student t-tests) knowledge and attitudes (university grades and CPCQ scores) before, just after teaching with simulated patients, and 2 months later. Satisfaction with the program (including the quality of the debriefing) was also investigated. The CPCQ scale was validated by assessing the factor structure, internal consistency, and test-retest reliability. Finally, a comparison was run with a control group who received the usual psychiatric instruction using covariance analyses. RESULTS: Twenty-four medical students were included in the simulation group and 76 in the control group. Just after the simulation, knowledge and attitudes increased significantly in the simulation group. Satisfaction with the training and debriefing was very high. The CPCQ scale showed good psychometric properties: a single-factor structure, acceptable internal consistency (α = 0.73 [0.65-0.85]), and good test-retest reliability (ICC = 0.71 [0.35-0.88]). Two months after the simulation, knowledge and attitudes were significantly higher in the simulation group than the control group, despite a lack of difference in knowledge before the simulation. CONCLUSIONS: Adding a simulation program in psychiatry to the usual teaching improved the knowledge and confidence of medical students. The CPCQ scale could be used for the evaluation of educational programs.


Assuntos
Psiquiatria , Estudantes de Medicina , Competência Clínica , Humanos , Psiquiatria/educação , Psicometria , Reprodutibilidade dos Testes
17.
World J Surg Oncol ; 19(1): 179, 2021 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-34134714

RESUMO

BACKGROUND: Lymph node metastasis (LNM) is a risk factor for poor long-term outcomes and a prognostic factor for disease-free survival in colon cancer. Preoperative lymph node status evaluation remains a challenge. The purpose of this study is to determine whether tumor size measured by multidetector computed tomography (MDCT) could be used to predict LNM and N stage in colon cancer. MATERIAL AND METHODS: One hundred six patients with colon cancer who underwent radical surgery within 1 week of MDCT scan were enrolled. Tumor size including tumor length (Tlen), tumor maximum diameter (Tdia), tumor maximum cross-sectional area (Tare), and tumor volume (Tvol) were measured to be correlated with pathologic LNM and N stage using univariate logistic regression analysis, multivariate logistic analysis, and receiver operating characteristic (ROC) curve analysis. RESULTS: The inter- and intraobserver reproducibility of Tlen (intraclass correlation coefficient [ICC] = 0.94, 0.95, respectively), Tdia (ICC = 0.81, 0.93, respectively), Tare (ICC = 0.97, 0.91, respectively), and Tvol (ICC = 0.99, 0.99, respectively) parameters measurement are excellent. Univariate logistic regression analysis showed that there were significant differences in Tlen, Tdia, Tare, and Tvol between positive and negative LNM (p < 0.001, 0.001, < 0.001, < 0.001, respectively). Multivariate logistic regression analysis revealed that Tvol was independent risk factor for predicting LNM (odds ratio, 1.082; 95% confidence interval for odds ratio, 1.039, 1.127, p<0.001). Tlen, Tdia, Tare, and Tvol could distinguish N0 from N1 stage (p < 0.001, 0.041, < 0.001, < 0.001, respectively), N0 from N2 (all p < 0.001), N0 from N1-2 (p < 0.001, 0.001, < 0.001, < 0.001, respectively), and N0-1 from N2 (p < 0.001, 0.001, < 0.001, < 0.001, respectively). The area under the ROC curve (AUC) was higher for Tvol than that of Tlen, Tdia, and Tare in identifying LNM (AUC = 0.83, 0.82, 0.69, 0.79), and distinguishing N0 from N1 stage (AUC = 0.79, 0.78, 0.63, 0.74), N0 from N2 stage (AUC = 0.92, 0.89, 0.80, 0.89, respectively), and N0-1 from N2 stage (AUC = 0.84, 0.79, 0.76, 0.83, respectively). CONCLUSION: Tumor size was correlated with regional LNM in resectable colon cancer. In particularly, Tvol showed the most potential for noninvasive preoperative prediction of regional LNM and N stage.


Assuntos
Neoplasias do Colo , Tomografia Computadorizada Multidetectores , Neoplasias do Colo/diagnóstico por imagem , Neoplasias do Colo/cirurgia , Humanos , Linfonodos/diagnóstico por imagem , Linfonodos/cirurgia , Metástase Linfática/diagnóstico por imagem , Prognóstico , Reprodutibilidade dos Testes , Estudos Retrospectivos
18.
BMJ Open ; 11(6): e045988, 2021 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-34135041

RESUMO

OBJECTIVES: Compassion is a key indicator of quality care that is reportedly eroding from patients' care experience. While the need to assess compassion is recognised, valid and reliable measures are lacking. This study developed and validated a clinically informed, psychometrically rigorous, patient-reported compassion measure. DESIGN: Data were collected from participants living with life-limiting illnesses over two study phases across four care settings (acute care, hospice, long term care (LTC) and homecare). In phase 1, data were analysed through exploratory factor analysis (EFA), with the final items analysed via confirmatory factor analysis (CFA) in phase 2. The Schwartz Center Compassionate Care Scale (SCCCS), the revised Edmonton Symptom Assessment Scale (ESAS-r) and Picker Patient Experience Questionnaire (PPEQ) were also administered in phase 2 to assess convergent and divergent validity. SETTING AND PARTICIPANTS: 633 participants were recruited over two study phases. In the EFA phase, a 54-item version of the measure was administered to 303 participants, with 330 participants being administered the final 15-item measure in the CFA phase. RESULTS: Both EFA and CFA confirmed compassion as a single factor construct with factor loadings for the 15-item measure ranging from 0.76 to 0.86, with excellent test-retest reliability (intraclass correlation coefficient range: 0.74-0.89) and excellent internal reliability (Cronbach's alpha of 0.96). The measure was positively correlated with the SCCCS (r=0.75, p<0.001) and PPEQ (r=0.60, p<0.001). Participants reporting higher experiences of compassion had significantly greater well-being and lower depression on the ESAS-r. Patients in acute care and hospice reported significantly greater experiences of compassion than LTC residents. CONCLUSIONS: There is strong initial psychometric evidence for the Sinclair Compassion Questionnaire (SCQ) as a valid and reliable patient-reported compassion measure. The SCQ provides healthcare providers, settings and administrators the means to routinely measure patients experiences of compassion, while providing researchers a robust measure to conduct high-quality research.


Assuntos
Empatia , Medidas de Resultados Relatados pelo Paciente , Atenção à Saúde , Análise Fatorial , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
19.
Zhejiang Da Xue Xue Bao Yi Xue Ban ; 50(2): 187-194, 2021 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-34137225

RESUMO

To establish an intelligent cervical vertebra maturity assessment system, and to evaluate the reliability and clinical value of the system. Sixty children aged were recruited in the study. Lateral cephalometric radiograph and cone beam CT (CBCT) were taken at the same period. Based on the CBCT data, the system automatically extracted the patient's facial area through Otsu's method, intercepted the sagittal plane by three-dimensional least squares method, captured the second to fourth cervical vertebrae by superpixel segmentation. And then selected points were marked automatically through morphological algorithm and manual method. Consistency test was performed on the two sets of data to compare the reliability of automated cervical morphology capture. According to the parameters of morphological identification, positioning and staging algorithms were designed to form the intelligent cervical vertebra maturity assessment system. The cervical vertebra maturity was also judged manually on the lateral cephalometric radiograph. The weighted Kappa test and the Gamma correlation coefficient were subsequently applied to evaluate the consistency and correlation. The results showed that the cervical vertebra features automatically captured based on CBCT data had a high accuracy on the overall morphological recognition. In the prediction of 8 inflection points out of 13 points, there was no significant difference between automatic and manual method on both X and Y axes (all >0.05). The assessment results of the cervical vertebra maturity of the intelligent system had strong consistency and correlation with the manual recognition results (weighted Kappa value=0.877, Gamma value=0.991, both <0.05). The intelligent cervical vertebrae maturity assessment system based on CBCT data established in this study presents reliable outcome and high degree of automation, indicating that the system may be used clinically.


Assuntos
Vértebras Cervicais , Tomografia Computadorizada de Feixe Cônico , Cefalometria , Vértebras Cervicais/diagnóstico por imagem , Criança , Humanos , Radiografia , Reprodutibilidade dos Testes
20.
Viruses ; 13(6)2021 05 26.
Artigo em Inglês | MEDLINE | ID: mdl-34073484

RESUMO

Due to the current, rapidly increasing Coronavirus disease 2019 (COVID-19) pandemic, efficient and highly specific diagnostic methods are needed. The receptor-binding part of the spike (S) protein, S1, has been suggested to be highly virus-specific; it does not cross-react with antibodies against other coronaviruses. Three recombinant partial S proteins of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) expressed in mammalian or baculovirus-insect cells were evaluated as antigens in a Luminex-based suspension immunoassay (SIA). The best performing antigen (S1; amino acids 16-685) was selected and further evaluated by serum samples from 76 Swedish patients or convalescents with COVID-19 (previously PCR and/or serologically confirmed), 200 pre-COVID-19 individuals (180 blood donors and 20 infants), and 10 patients with acute Epstein-Barr virus infection. All 76 positive samples showed detectable antibodies to S1, while none of the 210 negative controls gave a false positive antibody reaction. We further compared the COVID-19 SIA with a commercially available enzyme immunoassay and a previously evaluated COVID-19 rapid antibody test. The results revealed an overall assay sensitivity of 100%, a specificity of 100% for both IgM and IgG, a quantitative ability at concentrations up to 25 BAU/mL, and a better performance as compared to the commercial assays, suggesting the COVID-19 SIA as a most valuable tool for efficient laboratory-based serology.


Assuntos
Anticorpos Antivirais/sangue , Teste Sorológico para COVID-19/métodos , COVID-19/diagnóstico , Imunoensaio/métodos , SARS-CoV-2/imunologia , COVID-19/imunologia , Herpesvirus Humano 4/imunologia , Humanos , Imunoglobulina G/sangue , Imunoglobulina G/imunologia , Imunoglobulina M/sangue , Imunoglobulina M/imunologia , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Glicoproteína da Espícula de Coronavírus/imunologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...