نتایج جستجو برای: factor analysis fa
تعداد نتایج: 3486579 فیلتر نتایج به سال:
Factor Analysis (FA) is the study of variance within a group. Within-Subject Variance (WSV) affected by multiple features in context such as Experimental Design (ED) or Sampling (SD). The aim this to provide an empirical evaluation influence different aspects ED and SD on WSV FA terms model precision. results showed that precisions overall fit indices TLI CFI, functions VTF, STV, h2, their inte...
BACKGROUND Schizophrenia is associated with diverse white matter (WM) brain abnormalities. In this study, we sought to examine the WM microstructural findings which underlie clinical psychopathology clusters in schizophrenia and hypothesized that these symptom clusters are associated with common and unique WM tracts. METHODS Overall, 76 healthy controls (HC), and 148 patients with schizophren...
Ferulic acid (FA) is a derivative of cinnamic acid. It is used in the treatment of heart head blood-vessel disease and exerts protective effects against hypoxia/ischemia-induced cell injury in the brain. This study investigated the potential neuroprotective effects of FA against ischemia/reperfusion (I/R)-induced brain injury in vivo and in vitro through hematoxylin and eosin (H&E) and Nissl st...
BACKGROUND Homocysteine and pro-inflammatory mediators such as cyclooxygenase-2 (COX-2) have been linked to vascular dysfunction and risks of cardiovascular diseases. Fulvic acid (FA), a class of compounds of humic substances, possesses various pharmacological properties. However, the effect of FA on inflammatory responses of the monocytes remains unclear. We investigated the regulatory effect ...
Linear factor analysis (FA) models can be reliably tested using test statistics based on residual covariances. We show that the same statistics can be used to reliably test the fit of item response theory (IRT) models for ordinal data (under some conditions). Hence, the fit of an FA model and of an IRT model to the same data set can now be compared. When applied to a binary data set, our experi...
BACKGROUND Risk assessment of a benign breast disease/lesion (BBD) for invasive breast cancer (IBC) is typically done through a longitudinal study. For an infrequently-reported BBD, the shortage of occurrence data alone is a limiting factor to conducting such a study. Here we present an approach based on co-occurrence analysis, to help address this issue. We focus on fibroadenomatoid change (FA...
Water samples were collected for determination of dissolved trace metals in 56 sampling sites throughout the upper Han River, China. Multivariate statistical analyses including correlation analysis, stepwise multiple linear regression models, and principal component and factor analysis (PCA/FA) were employed to examine the land use influences on trace metals, and a receptor model of factor anal...
© Translational Andrology and Urology. All rights reserved. Transl Androl Urol, 2017;6(S3) tau.amegroups.com proportional hazards regression analysis identified FA score was an independent predictor for OS and CSS. Conclusions: The evaluation of preoperative FA score can be regarded as an independent prognostic factor for predicting OS and CSS of patients with UTUC. The fibrinogen and albumin l...
© Translational Andrology and Urology. All rights reserved. Transl Androl Urol, 2017;6(S3) tau.amegroups.com proportional hazards regression analysis identified FA score was an independent predictor for OS and CSS. Conclusions: The evaluation of preoperative FA score can be regarded as an independent prognostic factor for predicting OS and CSS of patients with UTUC. The fibrinogen and albumin l...
This retrospective study was designed to determine the prognostic value of a cumulative score (FA score) based on pretreatment plasma fibrinogen and serum albumin levels for 326 patients newly diagnosed high-grade glioma (HGG). Receiver operating characteristic (ROC) curve analysis was performed to determine the optimal cut-off values. Univariate and multivariate analysis were performed to eval...
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