Search Results - subject:"external validation"

On the Validity of Using Webpage Texts to Identify the Target Population of a Survey: An Application to Detect Online Platforms

Daas, Piet; Hassink, Wolter; Klijs, Bart - 2023

A statistical classification model was developed to identify online platform organizations based on the texts on their website. The model was subsequently used to identify all (potential) platform organizations with a website included in the Dutch Business Register. The empirical outcomes of the...

Persistent link: https://www.econbiz.de/10014296685

On the validity of using webpage texts to identify the target population of a survey : an application to detect online platforms

Daas, Piet J. H.; Hassink, Wolter H. J.; Klijs, Bart - 2023

Persistent link: https://www.econbiz.de/10013545833

Multilayer Perceptron Model for Predicting Acute Toxicity of Fungicides on Rats

Hamadache, Mabrouk; Amrane, Abdeltif; Hanini, Salah; … - In: International Journal of Quantitative … 3 (2018) 1, pp. 100-118

Neural Network model trained with the Levenberg-Marquardt algorithm. The prediction accuracy for the external validation set …

Persistent link: https://www.econbiz.de/10012047217

The impact of advertising content on movie revenues

Rao, Vithala R.; Ravid, S. Abraham Avri; Gretz, Richard T. - In: Marketing letters : a journal of research in marketing 28 (2017) 3, pp. 341-355

Persistent link: https://www.econbiz.de/10011730642

Tools for checking calibration of a Cox model in external validation: Prediction of population-averaged survival curves based on risk groups

Royston, Patrick - In: Stata Journal 15 (2015) 1, pp. 275-291

Royston (2014, Stata Journal 14: 738–755) explained how a popular application of the Cox proportional hazards model "is to develop a multivariable prediction model, often a prognostic model to predict the future clinical outcome of patients with a particular disorder from 'baseline' factors...

Persistent link: https://www.econbiz.de/10011265698

Statistical Methods to Adjust for Misclassified Repeated Exposures in Modeling Disease-Exposure Associations

Lu, Chengxing - 2008

In public health studies, it is common for exposure status to be misclassified. In this dissertation, statistical models to adjust for misclassification will be proposed to address four related questions of interest.The first question focuses on exploring the association between a disease and...

Persistent link: https://www.econbiz.de/10009480846

Tools for checking calibration of a Cox model in external validation: Approach based on individual event probabilities

Royston, Patrick - In: Stata Journal 14 (2014) 4, pp. 738-755

The Cox proportional hazards model has been used extensively in medicine over the last 40 years. A popular application is to develop a multivariable prediction model, often a prognostic model to predict the clinical outcome of patients with a particular disorder from "baseline" factors measured...

Persistent link: https://www.econbiz.de/10011105659