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A new heteroscedastic regression to analyze mass loss of wood in civil construction in Brazil
(2021-01-01)
A heteroscedastic regression based on the odd log-logistic Marshall–Olkin normal (OLLMON) distribution is defined by extending previous models. Some structural properties of this distribution are presented. The estimation ...
Body condition score of Nellore beef cows: a heritable measure to improve the selection of reproductive and maternal traits
(2015)
Despite the economic importance of beef cattle production in Brazil, female reproductive performance, which is strongly associated with production efficiency, is not included in the selection index of most breeding programmes ...
Log-Burr XII regression models with censored data
(ELSEVIER SCIENCE BV, 2008)
In survival analysis applications, the failure rate function may frequently present a unimodal shape. In such case, the log-normal or log-logistic distributions are used. In this paper, we shall be concerned only with ...
Logistic regression analysis of potential prognostic factors for pulmonary thromboembolism
(Amer Coll Chest Physicians, 2003-03-01)
Objective: To identify potential prognostic factors for pulmonary thromboembolism (PTE), establishing a mathematical model to predict the risk for fatal PTE and nonfatal PTE.Method: the reports on 4,813 consecutive autopsies ...
Analysis of a multiclass classification problem by Lasso Logistic Regression and Singular Value Decomposition to identify sound patterns in queenless bee colonies
(Elsevier, 2019-04)
This study presents an analysis of a multiclass classification problem to identify queenless states by monitoring bee sound in two possible cases; a strong and healthy colony that lost its queen and a reduced population ...
Progression of liver fibrosis in blood donors infected with hepatitis C virus
(2004-12-01)
Background/Aims. Chronic hepatitis by HCV is progressive towards cirrhosis, with variable rate. We evaluated the rate of fibrosis progression (RFP), risk factors associated with advanced fibrosis (F3 and F4), and estimated ...
Ductal carcinoma in situ in core needle biopsies and its association with extensive in situ component in the surgical specimen
(2012-06-22)
Background: We evaluated the presence of ductal carcinoma in situ (DCIS) in core needle biopsies (CNB) from invasive ductal lesions. Methods: Retrospective study, which analyzed 90 cases of invasive ductal carcinoma lesions. ...
Residuals for log-Burr XII regression models in survival analysis
(ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2011)
In this paper, we compare three residuals to assess departures from the error assumptions as well as to detect outlying observations in log-Burr XII regression models with censored observations. These residuals can also ...