Derivation of Generalized Equations for the Predictive Value of Sequential Screening Tests [PDF]
arXiv, 2020 Using Bayes' Theorem, we derive generalized equations to determine the positive and negative predictive value of screening tests undertaken sequentially. Where a is the sensitivity, b is the specificity, $\phi$ is the pre-test probability, the combined positive predictive value, $\rho(\phi)$, of $n$ serial positive tests, is described by: $\rho(\phi)
arxiv
Transvaginal ultrasonography and hysteroscopy in postmenopausal bleeding: a prospective study [PDF]
, 2001 OBJECTIVE: To determine the diagnostic value of transvaginal ultrasonography and hysteroscopy in patients with postmenopausal bleeding. MATERIAL AND METHODS: Between January 1, 1998 and June 30, 1999, 88 outpatient women with postmenopausal bleeding were
Almeida e Sousa, L +7 more
core +1 more source
Negative 4-Probe Conductances of Mesoscopic Superconducting Wires [PDF]
, 1994 We analyze the longitudinal 4-probe conductance of mesoscopic normal and superconducting wires and predict that in the superconducting case, large negative values can arise for both the weakly disordered and localized regimes. This contrasts sharply with the behaviour of the longitudinal 4-probe conductance of normal wires, which in the localized limit
arxiv +1 more source
Information Graphs Incorporating Predictive Values of Disease Forecasts
Entropy, 2020 Diagrammatic formats are useful for summarizing the processes of evaluation and comparison of forecasts in plant pathology and other disciplines where decisions about interventions for the purpose of disease management are often based on a proxy risk ...
Gareth Hughes +2 more
doaj +1 more source
BMC Research Notes, 2021 Objective The present simulation study aimed to assess positive predictive value (PPV) and negative predictive value (NPV) for our newly introduced Accounting for Expected Adjusted Effect test (AEAE test) and compare it to PPV and NPV for a traditional ...
Kimmo Sorjonen +3 more
doaj +1 more source
Predicting the Last Zero before an exponential time of a Spectrally Negative Lévy Process [PDF]
arXiv, 2021 Given a spectrally negative L\'evy process, we predict, in a $L_1$ sense, the last passage time of the process below zero before an independent exponential time. This optimal prediction problem generalises Baurdoux and Pedraza (2020) where the infinite horizon problem is solved.
arxiv
Serum profiling by MALDI-TOF mass spectrometry as a diagnostic tool for domoic acid toxicosis in California sea lions [PDF]
, 2012 Background There are currently no reliable markers of acute domoic acid toxicosis (DAT) for California sea lions. We investigated whether patterns of serum peptides could diagnose acute DAT.
Almeida, Jonas S +7 more
core +3 more sources
Frontiers in Surgery, 2023 ObjectiveEndoscopic ultrasound-guided fine-needle aspiration/biopsy (EUS-FNA/FNB) is an accurate technique for sampling the pancreas and mediastinum. The aim of this study was to determine the value of EUS-FNA/FNB in the diagnosis of mediastinal lesions ...
Jingjing Zhou +9 more
doaj +1 more source
Treat Different Negatives Differently: Enriching Loss Functions with Domain and Range Constraints for Link Prediction [PDF]
arXiv, 2023 Knowledge graph embedding models (KGEMs) are used for various tasks related to knowledge graphs (KGs), including link prediction. They are trained with loss functions that consider batches of true and false triples. However, different kinds of false triples exist and recent works suggest that they should not be valued equally, leading to specific ...
arxiv
Plasmodium falciparum: linkage disequilibrium between loci in chromosomes 7 and 5 and chloroquine selective pressure in Northern Nigeria. [PDF]
, 2001 In view of the recent discovery (Molecular Cell 6, 861-871) of a (Lys76Thr) codon change in gene pfcrt on chromosome 7 which determines in vitro chloroquine resistance in Plasmodium falciparum, we have re-examined samples taken before treatment in our ...
Boko, Pelagie +15 more
core +5 more sources