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296 results for “diagnostic accuracy”
Diagnostic accuracy of a set of clinical and radiological criteria for screening of COVID-19 using RT-PCR as the reference standard - Dataset
<p>Dataset of a cohort whose summary is described below.</p> <p>Abstract</p> <p><strong>Objective:</strong> To evaluate the accuracy, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of a set of clinical-radiological criteria for COVID-19 screening in patients with severe acute respiratory failure (SARF) admitted to intensive care units (ICUs), using reverse-transcriptase polymerase chain reaction (RT-PCR) as the reference standard. <strong>Method: </strong>Diagnostic accuracy study including a historical cohort of 1009 patients consecutively admitted to ICUs across six hospitals in Curitiba (Brazil) from March to September, 2020. The sample was stratified into groups by the strength of suspicion for COVID-19 (strong <em>versus</em> weak) using parameters based on three clinical and radiological (chest computed tomography) criteria. The diagnosis of COVID-19 was confirmed by RT-PCR (referent). <strong>Results:</strong> With respect to RT-PCR, the proposed criteria had 98.5% (95% confidence interval [95% CI] 97.5–99.5%) sensitivity, 70% (95% CI 65.8–74.2%) specificity, 85.5% (95% CI 83.4–87.7%) accuracy, PPV of 79.7% (95% CI 76.6–82.7%) and NPV of 97.6% (95% CI 95.9–99.2%). <strong>Conclusion: </strong>The proposed set of clinical-radiological criteria were accurate in identifying patients with strong <em>versus</em> weak suspicion for COVID-19 and had high sensitivity and considerable specificity with respect to RT-PCR. These criteria may be useful for screening COVID-19 in patients presenting with SARF.</p>
Accuracy of EFP/AAP 2018 and CDC/AAP 2012 in partial periodontitis diagnostic protocols with 11-12 & 13-14 NHANES periodontal data
<p>Accuracy of EFP/AAP 2018 and CDC/AAP 2012 in partial periodontitis diagnostic protocols with 11-12 & 13-14 NHANES periodontal data</p>
Data for Project 'Diagnostic Accuracy, Reliability, and Construct Validity of the German Quick Mild Cognitive Impairment Screen'
<p>Data for Project 'Diagnostic Accuracy, Reliability, and Construct Validity of the German Quick Mild Cognitive Impairment Screen' consisting of (1) the complete data set of all data analyzed for the project 'Diagnostic Accuracy, Reliability, and Construct Validity of the German Quick Mild Cognitive Impairment Screen' ('Data_Brain-IT-Validation-Qmci_for-publication.xlsx'; and (2) a corresponding README file including (a) general information, (b) data and file overview, (c) sharing and access information, (d) methodological information, and (e) data-specific information.</p>
BRAIN Journal-New Computer Assisted Diagnostic to Detect Alzheimer Disease-Figure 19. Accuracy of classification using the three methods: KNN, SVM and our method for MCI subjects
<p>Whatever the patient condition, Normal, MCI or AD, our method has provided us with better results. Advocate Example precision for Normal Patients was found 96% as opposed to 88% for the SVM method and 84% for KNN. For MCI patients was found 88% as opposed to 80% for the SVM method and 72% for KNN. Also for AD patients were found 92% as opposed to 88% for the SVM method and 80% for KNN. Our classification method gave us the best results, finding overall accuracy of 92% as opposed to 84% for the SVM method and 78.66% for KNN. </p>
BRAIN Journal-New Computer Assisted Diagnostic to Detect Alzheimer Disease-Figure 20. The accuracy of classification using the three methods, KNN, SVM and our method, for AD subjects
<p>Whatever the patient condition, Normal, MCI or AD, our method has provided us with better results. Advocate Example precision for Normal Patients was found 96% as opposed to 88% for the SVM method and 84% for KNN. For MCI patients was found 88% as opposed to 80% for the SVM method and 72% for KNN. Also for AD patients were found 92% as opposed to 88% for the SVM method and 80% for KNN. Our classification method gave us the best results, finding overall accuracy of 92% as opposed to 84% for the SVM method and 78.66% for KNN. </p>
BRAIN Journal-New Computer Assisted Diagnostic to Detect Alzheimer Disease-Figure 18. Accuracy of classification using the three methods, KNN, SVM and our method, for normal subjects
<p>We present three figures representing the accuracy of the classification using the three methods, KNN, SVM and our method for normal, MCI and Alzheimer subjects. </p>
Diagnostic accuracy of a novel enzyme‑linked immunoassay for the detection of IgG and IgG4 against Strongyloides stercoralis based on the recombinant antigens NIE/SsIR.
<p>Background: The diagnosis of strongyloidiasis is challenging. Serological tests are acknowledged to have high sensitivity, but issues due to cross-reactions with other parasites, native parasite antigen supply and intrinsic test variability do occur. Assays based on recombinant antigens could represent an improvement. The aim of this study was to assess the sensitivity and specificity of two novel immunoglobulin (Ig)G and IgG4 enzyme-linked immunosorbent assays (ELISAs) based on the recombinant antigens NIE/SsIR for the diagnosis of strongyloidiasis.</p> <p>Methods: This was a retrospective diagnostic accuracy study. We included serum samples collected from immigrants from strongyloidiasis endemic areas for whom there was a matched result for Strongyloides stercoralis on agar plate culture and/or PCR assay, or a positive microscopy for S. stercoralis larvae. For the included samples, results were also available from an in-house indirect fluorescent antibody test (IFAT) and a commercial (Bordier ELISA; Bordier Affinity Products SA) ELISA. We excluded: (i) samples with insufficient serum volume; (ii) samples from patients treated with ivermectin in the previous 6 months; and (iii) sera from patients for whom only routine coproparasitology was performed after formol–ether concentration, if negative for S. stercoralis larvae. The performance of the novel assays was assessed against: (i) a primary reference standard, with samples classified as negative/positive on the basis of the results of fecal tests; (ii) a composite reference standard (CRS), which also considered patients to be positive who had concordant positive results for the IFAT and Bordier ELISA or with a single “high titer” positive result for the IFAT or Bordier ELISA. Samples with a single positive test, either for the IFAT or Bordier ELISA, at low titer, were considered to be “indeterminate,” and analyses were carried out with and without their inclusion.</p> <p>Results: When assessed against the primary reference standard, the sensitivities of the IgG and IgG4 ELISAs were 92% (95% confidence interval [CI]: 88–97%) and 81% (95% CI: 74–87%), respectively, and the specificities were 91% (95% CI: 88–95%) and 94% (95% CI: 91–97%), respectively. When tested against the CRS, the IgG ELISA performed best, with 78% sensitivity (95% CI: 72–83%) and 98% specificity (95% CI: 96–100%), when a cut-off of 0.675 was applied and the indeterminate samples were excluded from the analysis.</p> <p>Conclusion: The NIE-SsIR IgG ELISA demonstrated better accuracy than the IgG4 assay and was deemed promising particularly for serosurveys in endemic areas.</p>
[Dataset] Pattern and repeatability of ascarid-specific antigen excretion through chicken faeces, and the diagnostic accuracy of copro-antigen measurements as compared with McMaster egg counts and plasma and egg yolk antibody measurements in laying hens
<p>Comprehensive data examining the pattern and repeatability of ascarid-specific antigen excretion in chicken faeces and the diagnostic accuracy of copro-antigen measurements compared to McMaster egg counts and antibody measurements in laying hens.</p> <p>The dataset consists of observations and measurements obtained from a controlled study involving laying hens infected with mixed <em>Ascaridia galli</em> and<em> Heterakis gallinarum</em>. A total of 179 individual hens were monitored between wpi 2 and 18 and their fecal samples/blood samples were collected at specific time points. Faecel samples were repeatedly collected four(4) consecutive times in one wpi.Hence antigen measurements is 4 X 179 = 716 measurements</p>
Figure 1 in Diagnostic accuracy of loop-mediated isothermal amplification (LAMP) for screening patients with imported malaria in a non-endemic setting
Figure 1. Study flow chart.
Investigation of the diagnostic importance and accuracy of CT in the chest compared to the RT-PCR test for suspected COVID-19 patients in Jordan
<p>As the world continues to battle the COVID-19 pandemic, Jordan is no exception. In order to improve the accuracy of diagnosis, researchers in Jordan have conducted an investigation into the diagnostic importance and accuracy of CT in the chest compared to the RT-PCR test for suspected COVID-19 patients.</p>
Accuracy, acceptability, and feasibility of diagnostic tests for the screening of Strongyloides stercoralis in the field: the ESTRELLA study
<p>Raw data from the diagnostic study ESTRELLA. </p> <p>The primary objective of this study was to estimate the accuracy of five tests - a recombinant antigen- rapid diagnostic test (RDT); a crude antigen-based ELISA (Bordier ELISA); an ELISA based on two recombinant antigens (Strongy Detect ELISA); a modified Baermann method; an in-house real-time PCR for <em>Strongyloides stercoralis</em> infection. Secondary objectives were acceptability and feasibility of use in an endemic area.</p> <p>The study was carried out in remote villages of Ecuador</p>
European Multicenter Validation of PCaVision: A Head-to-Head Diagnostic Accuracy Study Comparing Multiparametric Transrectal Ultrasound to MRI for Clinically Significant Prostate Cancer Detection
ClinicalTrials.gov study NCT06935487. IPD Sharing: YES. Countries: 6. Publications: 4.
Impact on Diagnostic Accuracy of a Specific Clinical Ultrasound Practical Teaching
ClinicalTrials.gov study NCT04879459. IPD Sharing: NO. Countries: 1. Publications: 16.
Diagnostic Accuracy of Electrocardiogram for Acute Coronary Occlusion Resulting in Myocardial Infarction
ClinicalTrials.gov study NCT04022668. IPD Sharing: NO. Countries: 1. Publications: 1.
Diagnostic Accuracy of "Three Rings Vulvoscopy" for Detection of Vulvar Dermatosis
ClinicalTrials.gov study NCT02732145. IPD Sharing: NO. Countries: 1. Publications: 9.
Diagnostic Accuracy of On-line Quantitative Flow Ratio (QFR). FAVOR II Europe-Japan
ClinicalTrials.gov study NCT02959814. IPD Sharing: UNDECIDED. Countries: 7. Publications: 2.
Diagnostic Accuracy of Shear-Wave Elastography for the Preoperative Risk Stratification of Follicular Lesions of the Thyroid
ClinicalTrials.gov study NCT03106337. IPD Sharing: NO. Countries: 1. Publications: 1.
Diagnostic Accuracy of CAD4TB and C-reactive Protein Assay as Triage Tests for Pulmonary Tuberculosis
ClinicalTrials.gov study NCT04666311. IPD Sharing: YES. Countries: 2. Publications: 3.
Diagnostic Accuracy of a Novel Machine Learning Algorithm to Estimate Gestational Age
ClinicalTrials.gov study NCT05433519. IPD Sharing: YES. Countries: 2. Publications: 1.
Diagnostic accuracy of nutritional screening tools in patients with digestive system tumors: A meta-analysis and bayesian evaluation dataset
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.