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1.
Acta Neurol Taiwan ; 31(1): 24-35, 2022 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-34988951

RESUMO

PURPOSE: Quality of life (QoL) is considered as an important criterion for therapeutic effectiveness. Therefore, the present study aimed to validate the Persian version of the Hamburg Quality of Life Questionnaire in Multiple Sclerosis (HAQUAMS) for use in Iranian people with MS. METHODS: In a cross-sectional study, 158 people with MS were selected through the census sampling method. The construct validity of the Persian version of HAQUAMS was first evaluated by a confirmatory factor analysis (CFA) in AMOS-22 software, and then the internal consistency reliability and the item-total score correlations were calculated for each subscale by the SPSS-22. RESULTS: The CFA and output results indicated that the HAQUAMS with a five-factor structure among the Iranian MS patients had a good construct validity if an item was eliminated and a number of covariance errors between items were released (RMSEA is euqal to 0.069). The internal consistency of HAQUAMS subscales was acceptable to excellent (alpha is euqal to 0.81 to 0.91). The analysis of item-total score correlation for determining the construct validity of HAQUAMS indicated that all items of the questionnaire had a moderate to strong positive correlation with their subscales (P less than 0.0001, r is euqal to 0.41 to 0.89). The correlation of total scores of HAQUAMS and the Beck Depression Inventory-short form (BDI-13) was equal to 0.74 (P less than 0.0001), indicating good concurrent criterion validity. CONCLUSION: The Persian version of the HAQUAMS with a five-factor construct had acceptable validity and reliability and could be used for measurement of the health related QoL in Iranian people with MS.


Assuntos
Esclerose Múltipla , Qualidade de Vida , Estudos Transversais , Humanos , Irã (Geográfico) , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
2.
Agri ; 34(1): 16-22, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34988958

RESUMO

OBJECTIVES: Evaluation of low back pain (LBP) requires a condition specific disability questionnaire along with pain and satisfaction measure such as self-assessment pain scales. Dallas Pain Questionnaire (DPQ) is a 16-item visual analog scale, developed for evaluating patient's cognitions about the percentage that chronic pain affects four aspects of the subject's lives. It's easy to understand; can be answered in 3-5 min and can be scored in <1 min. This reliability and validation study offers health-care providers an opportunity to utilize this distinct questionnaire in Turkish population with back pain. The objectives are translation of Dallas questionnaire from English to Turkish language and to perform validation and reliability study. METHODS: A total of 102 patients (79 women and 23 men) with mean age of 50.2 years and LBP for at least 3 months answered DPQ along with five other previously translated and validated questionnaires in Turkish language. Fifty-nine of these patients participated retest reliability after 7 days. Internal consistency and test-retest analyzes were conducted to determine the reliability and convergent validity was evaluated for the validation study. RESULTS: The questionnaire was noted to have high internal consistency. The test-retest analysis revealed an excellent correlation (ICC=0.969). Pearson correlation coefficient shows that all subscales (sections) of DPQ are significant and comparable with each of the other questionnaires included in this study proving that it has sufficient convergent validity (p<0.001). CONCLUSION: The Turkish version of DPQ is content, valid, and reliable. DPQ is sensitive to use in patients with LBP.


Assuntos
Idioma , Dor Lombar , Avaliação da Deficiência , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
4.
Nat Microbiol ; 7(1): 97-107, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34972825

RESUMO

Global and national surveillance of SARS-CoV-2 epidemiology is mostly based on targeted schemes focused on testing individuals with symptoms. These tested groups are often unrepresentative of the wider population and exhibit test positivity rates that are biased upwards compared with the true population prevalence. Such data are routinely used to infer infection prevalence and the effective reproduction number, Rt, which affects public health policy. Here, we describe a causal framework that provides debiased fine-scale spatiotemporal estimates by combining targeted test counts with data from a randomized surveillance study in the United Kingdom called REACT. Our probabilistic model includes a bias parameter that captures the increased probability of an infected individual being tested, relative to a non-infected individual, and transforms observed test counts to debiased estimates of the true underlying local prevalence and Rt. We validated our approach on held-out REACT data over a 7-month period. Furthermore, our local estimates of Rt are indicative of 1-week- and 2-week-ahead changes in SARS-CoV-2-positive case numbers. We also observed increases in estimated local prevalence and Rt that reflect the spread of the Alpha and Delta variants. Our results illustrate how randomized surveys can augment targeted testing to improve statistical accuracy in monitoring the spread of emerging and ongoing infectious disease.


Assuntos
COVID-19/epidemiologia , Modelos Estatísticos , SARS-CoV-2/isolamento & purificação , Número Básico de Reprodução , Viés , COVID-19/diagnóstico , COVID-19/transmissão , Teste para COVID-19/estatística & dados numéricos , Previsões , Humanos , Prevalência , Reprodutibilidade dos Testes , SARS-CoV-2/genética , Análise Espaço-Temporal , Reino Unido/epidemiologia
5.
BMC Palliat Care ; 21(1): 8, 2022 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-35016670

RESUMO

OBJECTIVES: Intervention fidelity is imperative to ensure confidence in study results and intervention replication in research and clinical settings. Like many brief protocol psychotherapies, Dignity Therapy lacks sufficient evidence of intervention fidelity. To overcome this gap, our study purpose was to examine intervention fidelity among therapists trained with a systematized training protocol. METHODS: For preliminary fidelity evaluation in a large multi-site stepped wedge randomized controlled trial, we analyzed 46 early transcripts of interviews from 10 therapists (7 female; 7 White, 3 Black). Each transcript was evaluated with the Revised Dignity Therapy Adherence Checklist for consistency with the Dignity Therapy protocol in terms of its Process (15 dichotomous items) and Core Principles (6 Likert-type items). A second rater independently coded 26% of the transcripts to assess interrater reliability. RESULTS: Each therapist conducted 2 to 10 interviews. For the 46 scored transcripts, the mean Process score was 12.4/15 (SD = 1.2), and the mean Core Principles score was 9.9/12 (SD = 1.8) with 70% of the transcripts at or above the 80% fidelity criterion. Interrater reliability (Cohen's kappa and weighted kappa) for all Adherence Checklist items ranged between .75 and 1.0. For the Core Principles items, Cronbach's alpha was .92. CONCLUSIONS: Preliminary findings indicate that fidelity to Dignity Therapy delivery was acceptable for most transcripts and provide insights for improving consistency of intervention delivery. The systematized training protocol and ongoing monitoring with the fidelity audit tool will facilitate consistent intervention delivery and add to the literature about fidelity monitoring for brief protocol psychotherapeutic interventions.


Assuntos
Neoplasias , Respeito , Idoso , Estudos Transversais , Feminino , Humanos , Pacientes Ambulatoriais , Reprodutibilidade dos Testes
6.
BMC Health Serv Res ; 22(1): 60, 2022 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-35022061

RESUMO

OBJECTIVE: To describe in detail an innovative program based on telemedicine for semi-automated prioritization of referrals from Primary Care (PC) to Rheumatology, for reproducibility purposes, and to present the results of the implementation study. METHODS: The context and situation were carefully analyzed, paying attention to all processes in place, referral numbers, waiting times, and number of complementary tests prior to discharge from Rheumatology. The composition of the team, aims, users, scope, and implementation phases were defined. Eight process indicators were established and measured before and 32 months after the program implementation. RESULTS: The program, which includes IT circuits, algorithms based on response to specific guideline-based checklists, e-consultation, and appointments based on priority, was fully implemented in our health area after a pilot study in two PC centers. After implementation, 6185 rheumatology referrals showed an e-consultation response delay of 8.95 days, and to first face-to-face visit (after e-consultation) of 12.6 (previous delay before program implementation was 83.1 days). Resolution by e-consultation reached 20% (1195 patients did not need seeing the rheumatologist to have the problem solved), and 1369 patients (32%) were discharged after the first visit. The overall resolution rate was 44.0% (2564 discharges/5830 e-consultations). From a random sample of 100 visits, only 10% of patients needed additional complementary tests to make a diagnosis and decision by Rheumatology (20.9% decrease from previous period). CONCLUSION: A careful analysis of the situation and processes, with implementation of simple IT circuits, allows for the improvement of the efficiency and resolution of problems in Rheumatology.


Assuntos
Reumatologia , Comunicação , Humanos , Projetos Piloto , Atenção Primária à Saúde , Encaminhamento e Consulta , Reprodutibilidade dos Testes , Listas de Espera
7.
Int J Surg ; 97: 106204, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34974199

RESUMO

Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has resulted in a catastrophic pandemic and severely impacted people's livelihoods worldwide. In addition, the emergence of SARS-CoV-2 variants has posed a severe threat to humankind. Due to the dearth of therapeutic options during the commencement of the pandemic, convalescent plasma therapy (CPT) played a significant part in the management of patients with severe form of COVID-19. Several recent studies have proposed various protective effects of CPT, such as antiviral, anti-inflammatory, anti-thrombotic, and immunomodulatory actions, curtailing the devastating consequences of the SARS-CoV-2 infection. On the contrary, several clinical studies have raised some serious concerns about the effectiveness and reliability of CPT in the management of patients with COVID-19. The protective effects of CPT in severely ill patients are yet to be proved. Moreover, the emergence of SARS-CoV-2 variants has raised concerns about the effectiveness of CPT against COVID-19. Therefore, to establish concrete evidence of the efficacy of CPT and adjudicate its inclusion in the management of COVID-19, an updated review of present literature is required, which could help in the development of an efficient therapeutic regimen to treat COVID-19 amid the emergence of new viral variants.


Assuntos
COVID-19 , SARS-CoV-2 , COVID-19/terapia , Humanos , Imunização Passiva , Reprodutibilidade dos Testes
8.
J Biomed Sci ; 29(1): 1, 2022 Jan 04.
Artigo em Inglês | MEDLINE | ID: mdl-34983527

RESUMO

The coronavirus disease 2019 (COVID-19) pandemic is an exceptional public health crisis that demands the timely creation of new therapeutics and viral detection. Owing to their high specificity and reliability, monoclonal antibodies (mAbs) have emerged as powerful tools to treat and detect numerous diseases. Hence, many researchers have begun to urgently develop Ab-based kits for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and Ab drugs for use as COVID-19 therapeutic agents. The detailed structure of the SARS-CoV-2 spike protein is known, and since this protein is key for viral infection, its receptor-binding domain (RBD) has become a major target for therapeutic Ab development. Because SARS-CoV-2 is an RNA virus with a high mutation rate, especially under the selective pressure of aggressively deployed prophylactic vaccines and neutralizing Abs, the use of Ab cocktails is expected to be an important strategy for effective COVID-19 treatment. Moreover, SARS-CoV-2 infection may stimulate an overactive immune response, resulting in a cytokine storm that drives severe disease progression. Abs to combat cytokine storms have also been under intense development as treatments for COVID-19. In addition to their use as drugs, Abs are currently being utilized in SARS-CoV-2 detection tests, including antigen and immunoglobulin tests. Such Ab-based detection tests are crucial surveillance tools that can be used to prevent the spread of COVID-19. Herein, we highlight some key points regarding mAb-based detection tests and treatments for the COVID-19 pandemic.


Assuntos
COVID-19 , Anticorpos Monoclonais/uso terapêutico , Anticorpos Neutralizantes , Anticorpos Antivirais , COVID-19/tratamento farmacológico , Humanos , Pandemias , Reprodutibilidade dos Testes , SARS-CoV-2 , Glicoproteína da Espícula de Coronavírus/genética
9.
BMC Public Health ; 22(1): 6, 2022 01 04.
Artigo em Inglês | MEDLINE | ID: mdl-34983466

RESUMO

BACKGROUND: In the City of Vancouver, Canada, non-profit food hubs such as food banks, neighbourhood houses, community centres, and soup kitchens serve communities that face food insecurity. Food that is available yet inaccessible cannot ensure urban food security. This study seeks to highlight food access challenges, especially in terms of mobility and transportation, faced by users of non-profit food hubs in the City of Vancouver before and during the COVID-19 crisis. METHODS: This study involved an online survey (n = 84) and semi-structured follow-up key informant interviews (n = 10) with individuals at least 19 years old who accessed food at a non-profit food hub located in the City of Vancouver more than once before and during the COVID-19 crisis. RESULTS: 88.5% of survey respondents found food obtained from non-profit food hubs to be either very or somewhat important to their household's overall diet. In their journey to access food at non-profit food hubs in the City of Vancouver, many survey respondents face barriers such as transportation distance/time, transportation inconveniences/reliability/accessibility, transportation costs, line-ups at non-profit food hubs, and schedules of non-profit food hubs. Comments from interview participants corroborate these barriers. CONCLUSIONS: Drawing from the findings, this study recommends that non-profit food hubs maintain a food delivery option and that the local transportation authority provides convenient and reliable paratransit service. Furthermore, this study recommends that the provincial government considers subsidizing transit passes for low-income households, that the provincial and/or federal governments consider bolstering existing government assistance programs, and that the federal government considers implementing a universal basic income. This study emphasizes how the current two-tier food system perpetuates stigma and harms the well-being of marginalized populations in the City of Vancouver in their journey to obtain food.


Assuntos
COVID-19 , Adulto , Abastecimento de Alimentos , Humanos , Reprodutibilidade dos Testes , SARS-CoV-2 , Inquéritos e Questionários , Transportes , Adulto Jovem
10.
Environ Int ; 158: 107005, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34991265

RESUMO

BACKGROUND: As part of the development of the World Health Organization (WHO)/International Labour Organization (ILO) Joint Estimates of the Work-related Burden of Disease and Injury, WHO and ILO carried out several systematic reviews to determine the prevalence of exposure to selected occupational risk factors. Risk of bias assessment for individual studies is a critical step of a systematic review. No tool existed for assessing the risk of bias in prevalence studies of exposure to occupational risk factors, so WHO and ILO developed and pilot tested the RoB-SPEO tool for this purpose. Here, we investigate the assessor burden, inter-rater agreement, and user experience of this new instrument, based on the abovementioned WHO/ILO systematic reviews. METHODS: Twenty-seven individual experts applied RoB-SPEO to assess risk of bias. Four systematic reviews provided a total of 283 individual assessments, carried out for 137 studies. For each study, two or more assessors independently assessed risk of bias across the eight RoB-SPEO domains selecting one of RoB-SPEO's six ratings (i.e., "low", "probably low", "probably high", "high", "unclear" or "cannot be determined"). Assessors were asked to report time taken (i.e. indicator of assessor burden) to complete each assessment and describe their user experience. To gauge assessor burden, we calculated the median and inter-quartile range of times taken per individual risk of bias assessment. To assess inter-rater reliability, we calculated a raw measure of inter-rater agreement (Pi) for each RoB-SPEO domain, between Pi = 0.00, indicating no agreement and Pi = 1.00, indicating perfect agreement. As subgroup analyses, Pi was also disaggregated by systematic review, assessor experience with RoB-SPEO (≤10 assessments versus > 10 assessments), and assessment time (tertiles: ≤25 min versus 26-66 min versus ≥ 67 min). To describe user experience, we synthesised the assessors' comments and recommendations. RESULTS: Assessors reported a median of 40 min to complete one assessment (interquartile range 21-120 min). For all domains, raw inter-rater agreement ranged from 0.54 to 0.82. Agreement varied by systematic review and assessor experience with RoB-SPEO between domains, and increased with increasing assessment time. A small number of users recommended further development of instructions for selected RoB-SPEO domains, especially bias in selection of participants into the study (domain 1) and bias due to differences in numerator and denominator (domain 7). DISCUSSION: Overall, our results indicated good agreement across the eight domains of the RoB-SPEO tool. The median assessment time was comparable to that of other risk of bias tools, indicating comparable assessor burden. However, there was considerable variation in time taken to complete assessments. Additional time spent on assessments may improve inter-rater agreement. Further development of the RoB-SPEO tool could focus on refining instructions for selected RoB-SPEO domains and additional testing to assess agreement for different topic areas and with a wider range of assessors from different research backgrounds.


Assuntos
Doenças Profissionais , Exposição Ocupacional , Viés , Efeitos Psicossociais da Doença , Humanos , Prevalência , Reprodutibilidade dos Testes , Organização Mundial da Saúde
11.
BMC Bioinformatics ; 23(1): 23, 2022 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-34991460

RESUMO

BACKGROUND: Ontology-based semantic similarity measures based on SNOMED-CT, MeSH, and Gene Ontology are being extensively used in many applications in biomedical text mining and genomics respectively, which has encouraged the development of semantic measures libraries based on the aforementioned ontologies. However, current state-of-the-art semantic measures libraries have some performance and scalability drawbacks derived from their ontology representations based on relational databases, or naive in-memory graph representations. Likewise, a recent reproducible survey on word similarity shows that one hybrid IC-based measure which integrates a shortest-path computation sets the state of the art in the family of ontology-based semantic measures. However, the lack of an efficient shortest-path algorithm for their real-time computation prevents both their practical use in any application and the use of any other path-based semantic similarity measure. RESULTS: To bridge the two aforementioned gaps, this work introduces for the first time an updated version of the HESML Java software library especially designed for the biomedical domain, which implements the most efficient and scalable ontology representation reported in the literature, together with a new method for the approximation of the Dijkstra's algorithm for taxonomies, called Ancestors-based Shortest-Path Length (AncSPL), which allows the real-time computation of any path-based semantic similarity measure. CONCLUSIONS: We introduce a set of reproducible benchmarks showing that HESML outperforms by several orders of magnitude the current state-of-the-art libraries in the three aforementioned biomedical ontologies, as well as the real-time performance and approximation quality of the new AncSPL shortest-path algorithm. Likewise, we show that AncSPL linearly scales regarding the dimension of the common ancestor subgraph regardless of the ontology size. Path-based measures based on the new AncSPL algorithm are up to six orders of magnitude faster than their exact implementation in large ontologies like SNOMED-CT and GO. Finally, we provide a detailed reproducibility protocol and dataset as supplementary material to allow the exact replication of all our experiments and results.


Assuntos
Ontologias Biológicas , Semântica , Medical Subject Headings , Reprodutibilidade dos Testes , Systematized Nomenclature of Medicine
12.
J Foot Ankle Res ; 15(1): 1, 2022 Jan 06.
Artigo em Inglês | MEDLINE | ID: mdl-34991669

RESUMO

BACKGROUND: Multi-segment foot models (MFMs) for assessing three-dimensional segmental foot motions are calculated via various analytical methods. Although validation studies have already been conducted, we cannot compare their results because the experimental environments in previous studies were different from each other. This study aims to compare the kinematics, repeatability, and reproducibility of five MFMs in the same experimental conditions. METHODS: Eleven healthy males with a mean age of 26.5 years participated in this study. We created a merged 29-marker set including five MFMs: Oxford (OFM), modified Rizzoli (mRFM), DuPont (DFM), Milwaukee (MiFM), and modified Shriners Hospital for Children Greenville (mSHCG). Two operators applied the merged model to participants twice, and then we analysed two relative angles of three segments: shank-hindfoot (HF) and hindfoot-forefoot (FF). Coefficients of multiple correlation (CMC) and mean standard errors were used to assess repeatability and reproducibility, and statistical parametric mapping (SPM) of the t-value was employed to compare kinematics. RESULTS: HF varus/valgus of the MiFM and mSHCG models, which rotated the segment according to radiographic or goniometric measurements during the reference frame construction, were significantly more repeatable and reproducible, compared to other models. They showed significantly more dorsiflexed HF and plantarflexed FF due to their static offset angles. DFM and mSHCG showed a greater range of motion (ROM), and some models had significantly different FF points of peak angle. CONCLUSIONS: Under the same conditions, rotating the segment according to the appropriate offset angle obtained from radiographic or goniometric measurement increased reliability, but all MFMs had clinically acceptable reliability compared to previous studies. Moreover, in some models, especially HF varus/valgus, there were differences in ROM and points of peak angle even with no statistical difference in SPM curves. Therefore, based on the results of this study, clinicians and researchers involved in the evaluation of foot and ankle dysfunction need an understanding of the specific features of each MFM to make accurate decisions.


Assuntos
Articulação do Tornozelo , Marcha , Adulto , Fenômenos Biomecânicos , Criança , Humanos , Masculino , Amplitude de Movimento Articular , Reprodutibilidade dos Testes
13.
BMC Res Notes ; 15(1): 4, 2022 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-34998424

RESUMO

OBJECTIVE: Portable gas exchange instruments allow the assessment of peak oxygen uptake (V̇O2peak) but are often bulky, expensive and require wearing a face mask thereby limiting their routine application. A newly developed miniaturized headset (VitaScale, Nuremberg, Germany) may overcome these barriers and allow measuring V̇O2peak without applying a face mask. Here we aimed (i) to disclose the technical setup of a headset incorporating a gas and volume sensor to measure volume flow and expired oxygen concentration and (ii) to assess the concurrent criterion-validity of the headset to measure V̇O2peak in 44 individuals exercising on a stationary cycle ergometer in consideration of the test-retest reliability of the criterion measure. RESULTS: The coefficient of variation (CV%) while measuring V̇O2peak during incremental cycling with the headset was 6.8%. The CV% for reliability of the criterion measure was 4.0% for V̇O2peak. Based on the present data, the headset might offer a new technology for V̇O2peak measurement due to its low-cost and mask-free design.


Assuntos
Máscaras , Consumo de Oxigênio , Teste de Esforço , Humanos , Oxigênio , Reprodutibilidade dos Testes
14.
BMC Musculoskelet Disord ; 23(1): 33, 2022 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-34986825

RESUMO

BACKGROUND: Biomechanical risk factors have been identified as the main predisposing factor of chronic low back pain (CLBP), especially in Army personnel. The Job Requirements and Physical Demands (JRPD) questionnaire has been developed to assess the biomechanical exposures related to CLBP. Examining the biomechanical risk factors could prevent CLBP. This study aimed to translate and cross-culturally adapt the JRPD into Persian and assess its psychometric properties among Iranian male Army personnel with CLBP. METHODS: In this cross-sectional study, the content validation of the JRPD was assessed after translating to Persian. The Persian JRPD was administered to 198 male Army personnel with CLBP, with an interval of 7 days, to assess test-retest reliability, including Cronbach's α, intraclass correlation coefficients (ICC), standard error of measurement (SEM), and minimal detectable change at 95% confidence interval (MDC95%). Scores of the Persian JRPD were correlated with the scores of visual analog scale (VAS), Borg's category-ratio (CR10) scale, general health questionnaire-28 (GHQ-28), and physical functioning (PF1 and PF2) subscale of the 12-item short-form health survey (SF-12) to assess convergent validity using Spearman correlation for a priori hypotheses. RESULTS: The Persian JRPD had good content validity evidenced by the higher content validity index (> 0.70). The questionnaire had a significant positive negligible to weak correlation with the VAS (rho = 0.27; p < 0.001), Borg's CR10 scale (rho = 0.19; p = 0.009), and the total score of GHQ-28 and its domains (rho ≤0.34; p < 0.05); and significant negative weak correlation with PF2 (rho = - 0.27; p < 0.001) and significant negative moderate correlation with PF1 (rho = - 0.35; p < 0.001), thus confirming the priori hypotheses (89%, 8/9). The internal consistency and ICC (α = 0.91; ICC = 0.80) were highly adequate, with SEM and MDC95% of 7.91 and 21.3 respectively. CONCLUSIONS: The JRPD was successfully adapted into Persian and had adequate psychometric properties in terms of content and convergent validity, internal consistency, and test-retest reliability. The questionnaire is found useable to assess the CLBP-related biomechanical exposures in Iranian male Army personnel.


Assuntos
Dor Lombar , Militares , Comparação Transcultural , Estudos Transversais , Humanos , Irã (Geográfico)/epidemiologia , Dor Lombar/diagnóstico , Dor Lombar/epidemiologia , Masculino , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
15.
BMC Psychol ; 10(1): 7, 2022 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-34986888

RESUMO

BACKGROUND: Beliefs about the unacceptability of experiencing or expressing negative emotions can contribute to diverse psychological symptoms and associated with poor treatment outcomes and low treatment attempts. The Beliefs about Emotions Scale (BES) was developed to assess such beliefs based on the cognitive-behavioral models; however, no study has reported on the psychometric properties of the BES in Korea. The present study aimed to cross-culturally adapt and validate the BES for the Korean population (BES-K). METHODS: The BES-K was administered to 592 Korean adults (323 men and 269 women) aged 20-59 years. Exploratory and confirmatory factor analysis were used to assess the factor model of the scale. Pearson correlation coefficients were used to evaluate the relationships between the BES-K and other psychological measures. RESULTS: The result showed a two-factor model of the BES-K, with Factor 1 relating to Interpersonal and Factor 2 representing Intrapersonal aspects. The scale had significant yet moderately low correlations with measures of depression, anxiety, and difficulties in emotion regulation. CONCLUSION: The BES-K is a useful instrument in evaluating the beliefs about emotions in the Korean population.


Assuntos
Transtornos de Ansiedade , Emoções , Adulto , Análise Fatorial , Feminino , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , República da Coreia , Inquéritos e Questionários
16.
Sensors (Basel) ; 22(1)2022 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-35009860

RESUMO

Brain-computer interfaces (BCI) can detect specific EEG patterns and translate them into control signals for external devices by providing people suffering from severe motor disabilities with an alternative/additional channel to communicate and interact with the outer world. Many EEG-based BCIs rely on the P300 event-related potentials, mainly because they require training times for the user relatively short and provide higher selection speed. This paper proposes a P300-based portable embedded BCI system realized through an embedded hardware platform based on FPGA (field-programmable gate array), ensuring flexibility, reliability, and high-performance features. The system acquires EEG data during user visual stimulation and processes them in a real-time way to correctly detect and recognize the EEG features. The BCI system is designed to allow to user to perform communication and domotic controls.


Assuntos
Interfaces Cérebro-Computador , Encéfalo , Computadores , Eletroencefalografia , Potencial Evocado P300 , Humanos , Reprodutibilidade dos Testes , Interface Usuário-Computador
17.
Sensors (Basel) ; 22(1)2022 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-35009876

RESUMO

Multimedia data play an important role in our daily lives. The evolution of internet technologies means that multimedia data can easily participate amongst various users for specific purposes, in which multimedia data confidentiality and integrity have serious security issues. Chaos models play an important role in designing robust multimedia data cryptosystems. In this paper, a novel chaotic oscillator is presented. The oscillator has a particular property in which the chaotic dynamics are around pre-located manifolds. Various dynamics of the oscillator are studied. After analyzing the complex dynamics of the oscillator, it is applied to designing a new image cryptosystem, in which the results of the presented cryptosystem are tested from various viewpoints such as randomness, time encryption, correlation, plain image sensitivity, key-space, key sensitivity, histogram, entropy, resistance to classical types of attacks, and data loss analyses. The goal of the paper is proposing an applicable encryption method based on a novel chaotic oscillator with an attractor around a pre-located manifold. All the investigations confirm the reliability of using the presented cryptosystem for various IoT applications from image capture to use it.


Assuntos
Algoritmos , Segurança Computacional , Confidencialidade , Multimídia , Reprodutibilidade dos Testes
18.
Sensors (Basel) ; 22(1)2022 Jan 04.
Artigo em Inglês | MEDLINE | ID: mdl-35009911

RESUMO

With the advancement in technology, machine learning can be applied to diagnose the mass/tumor in the brain using magnetic resonance imaging (MRI). This work proposes a novel developed transfer deep-learning model for the early diagnosis of brain tumors into their subclasses, such as pituitary, meningioma, and glioma. First, various layers of isolated convolutional-neural-network (CNN) models are built from scratch to check their performances for brain MRI images. Then, the 22-layer, binary-classification (tumor or no tumor) isolated-CNN model is re-utilized to re-adjust the neurons' weights for classifying brain MRI images into tumor subclasses using the transfer-learning concept. As a result, the developed transfer-learned model has a high accuracy of 95.75% for the MRI images of the same MRI machine. Furthermore, the developed transfer-learned model has also been tested using the brain MRI images of another machine to validate its adaptability, general capability, and reliability for real-time application in the future. The results showed that the proposed model has a high accuracy of 96.89% for an unseen brain MRI dataset. Thus, the proposed deep-learning framework can help doctors and radiologists diagnose brain tumors early.


Assuntos
Neoplasias Encefálicas , Aprendizado Profundo , Neoplasias Meníngeas , Humanos , Imageamento por Ressonância Magnética , Reprodutibilidade dos Testes
19.
Sensors (Basel) ; 22(1)2022 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-35009933

RESUMO

Low-cost sensors (LCS) are becoming popular for air quality monitoring (AQM). They promise high spatial and temporal resolutions at low-cost. In addition, citizen science applications such as personal exposure monitoring can be implemented effortlessly. However, the reliability of the data is questionable due to various error sources involved in the LCS measurement. Furthermore, sensor performance drift over time is another issue. Hence, the adoption of LCS by regulatory agencies is still evolving. Several studies have been conducted to improve the performance of low-cost sensors. This article summarizes the existing studies on the state-of-the-art of LCS for AQM. We conceptualize a step by step procedure to establish a sustainable AQM setup with LCS that can produce reliable data. The selection of sensors, calibration and evaluation, hardware setup, evaluation metrics and inferences, and end user-specific applications are various stages in the LCS-based AQM setup we propose. We present a critical analysis at every step of the AQM setup to obtain reliable data from the low-cost measurement. Finally, we conclude this study with future scope to improve the availability of air quality data.


Assuntos
Poluentes Atmosféricos , Poluição do Ar , Poluentes Atmosféricos/análise , Poluição do Ar/análise , Calibragem , Monitoramento Ambiental , Reprodutibilidade dos Testes
20.
Sensors (Basel) ; 22(1)2022 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-35009942

RESUMO

Structural damage identification technology is of great significance to improve the reliability and safety of civil structures and has attracted much attention in the study of structural health monitoring. In this paper, a novel structural damage identification method based on transmissibility in the time domain is proposed. The method takes the discrepancy of transmissibility of structure response in the time domain before and after damage as the basis of finite element model updating. The damage is located and quantified through iteration by minimizing the difference between the measurements at gauge locations and the reconstruction response extrapolated by the finite element model. Taking advantage of the response reconstruction method based on empirical mode decomposition, damage information can be obtained in the absence of prior knowledge on excitation. Moreover, this method directly collects time-domain data for identification without modal identification and frequent time-frequency conversion, which can greatly improve efficiency on the premise of ensuring accuracy. A numerical example is used to demonstrate the overall damage identification method, and the study of measurement noise shows that the method has strong robustness. Finally, the present work investigates the method through a simply supported overhanging beam. The experiments collect the vibration strain signals of the beam via resistance strain gauges. The comparison between identification results and theoretical values shows the effectiveness and accuracy of the method.


Assuntos
Vibração , Reprodutibilidade dos Testes
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