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1. Assessment of assumptions of statistical analysis methods in randomised clinical trials: the what and how: (Publication); ... the analysesof randomised clinical trials. With this study, we developed suggestions on howto test and validate underlying assumptions behind logistic regression, linearregression, and Cox regression when ...; Created on 29 January 2020
2. Testing for superiority between two variance functions: (Publication); This paper focuses on the problem of testing the null hypothesis that the variance functions of two populations are equal versus one-sided alternatives under a general nonparametric heteroscedastic regression ...; Created on 16 September 2019
3. Multiscale supervised classification of point clouds with urban and forest applications: (Publication); ... discriminant analysis, logistic regression, support vector machines, and random forest) in two different scenarios, urban and forest, formed by artificial and natural objects, respectively. The results ...; Created on 22 November 2019
4. Methylation Assessment for the Prediction of Malignancy in Mediastinal Adenopathies Obtained by Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration in Patients with Lung Cancer: (Publication); ... EBUS-TBNA. Methylation of p16/INK4a, MGMT, SHOX2, E-cadherin, DLEC1, and RASSF1A was quantified by nested methylation-specific qPCR in 218 EBUS-TBNA lymph node samples. Cross-validated linear regression ...; Created on 26 September 2019
5. Addition of a 161-SNP polygenic risk score to family history-based risk prediction: Impact on clinical management in non- BRCA1/2 breast cancer families: (Publication); ... unaffected female relatives were genotyped. The 161-SNP PRS was calculated and standardised to 327 population controls (sPRS). Association analysis was performed using a Cox-type random effect regression ...; Created on 26 September 2019
6. An alternative approach to establishing unbiased colorectal cancer risk estimation in Lynch syndrome: (Publication); ... on kinship coefficients as analytical weights in a proportional hazard regression on the cause-specific hazards. Confidence intervals (CIs) were obtained by bootstrapping at the family level. Results: ...; Created on 26 September 2019
7. On the estimation of variance parameters in non-standard generalised linear mixed models: application to penalised smoothing: (Publication); ... An important application field of SOP is penalised regression estimation of models where multiple quadratic penalties act on the same regression coefficients. We discuss in detail two of those models: ...; Created on 25 September 2019
8. On the optimism correction of the area under the receiver operating characteristic curve in logistic prediction models: (Publication); ... different methods proposed in the literature when correcting for the optimism of the estimated area under the receiver operating characteristic curve in logistic regression models. A simulation study (where ...; Created on 25 September 2019
9. Gestational Weight Gain and Offspring Bone Mass: Different Associations in Healthy Weight Versus Overweight Women: (Publication); ... relationships between GWG and offspring bone measures (bone mineral content [BMC], bone areal density [aBMD], size‐corrected BMC [scBMC], and height) at 7 years were fitted through local polynomial regression ...; Created on 25 September 2019
10. Late HIV Diagnosis but Earlier Antiretroviral Treatment Initiation in Northwest Spain: Impact of Current Treatment Guidelines: (Publication); ... regression model was used to identify time associated with Center for Disease Control and Prevention (CDC) categories change. Results: A high proportion of HIV-infected patients (66.7%) had initiated ART ...; Created on 24 September 2019
11. Prevalence of knee osteoarthritis in a random population sample in people aged 40 and over: (Publication); ... regression analysis carried out at the Cambre Health Center, A Coruña. A sample of 707 patients was included. Anthropometric variables, comorbidity and clinical examination of the knees were assessed. ...; Created on 24 September 2019
12. Discovery of an autoantibody signature for the early diagnosis of knee osteoarthritis: Data from the Osteoarthritis Initiative: (Publication); ... the results in 327 participants from the same subcohorts. The association of MAT2β-AAb levels with KOA incidence was assessed by combining several robust biostatistics analysis (logistic regression, Receiver ...; Created on 24 September 2019
13. Plug-in marginal estimation under a general regression model with missing responses and covariates ...: (Publication); In this paper, we consider a general regression model where missing data occur in the response and in the covariates. Our aim is to estimate the marginal distribution function and a marginal functional, ...; Created on 24 September 2019
14. Goodness-of-fit tests for quantile regression with missing responses ...: (Publication); Goodness–of–fit tests for quantile regression models, in the presence of missing observations in the response variable, are introduced and analyzed in this paper. The different proposals are based on the ...; Created on 19 September 2019
15. Predicting pollution incidents through semiparametric quantile regression models ...: (Publication); ... smoothers to estimate a semiparametric additive quantile regression model. We also propose a statistical hypothesis test to determine critical values, i.e., the values of the concentration that are significant ...; Created on 18 September 2019
16. Testing critical points of nonparametric regression curves: application to the management of stalked barnacles ...: (Publication); ... the management of this species. In particular, not enough is known about its growth pattern. Thus, we model the length–weight relationship of this resource for each harvest site. We use regression models ...; Created on 23 August 2019
17. A comparative analysis of long-term mortality after carotid endarterectomy and carotid stenting: (Publication); ... Kaplan-Meier estimation. We assessed the crude, adjusted, and propensity-matched (total matched pairs, n = 4261) hazard ratio (HR) of mortality for CEA vs CAS using Cox regression. Results The unadjusted ...; Created on 22 August 2019
18. Long-term Reintervention After Endovascular Abdominal Aortic Aneurysm Repair: (Publication); ... from the index hospitalization. We used classification and regression tree modeling to inform a multivariable Cox-regression model predicting reintervention after EVR. Results: We studied 12,911 patients ...; Created on 22 August 2019
19. An instrumental variable procedure for estimating Cox models with non‐proportional hazards in the presence of unmeasured confounding: (Publication); Two‐stage instrumental variable methods are commonly used for estimating average causal effects in the presence of an unmeasured confounder. In the context of the proportional hazard Cox regression models, ...; Created on 22 August 2019
20. A hybrid ARIMA–SVM model for the study of the remaining useful life of aircraft engines: (Publication); ... Then, we use the result of the previous step as the input of a support vector regression model (SVM), where RUL is the response variable. The validity of the method was checked on an extensive public database, ...; Created on 10 October 2018
21. A quantile regression model for bounded responses based on the exponential-geometric distribution ...: (Publication); ... a new regression model is introduced by considering the proposed distribution, which is adequate for situations where the response variable is restricted to a bounded interval, as an alternative to the ...; Created on 09 October 2018
22. A model specification test for the variance function in nonparametric regression ...: (Publication); The problem of testing for the parametric form of the conditional variance is considered in a fully nonparametric regression model. A test statistic based on a weighted L2-distance between the empirical ...; Created on 09 October 2018
23. A two-sample test for the error distribution in nonparametric regression based on the characteristic function ...: (Publication); A test for the equality of error distributions in two nonparametric regression models is proposed. The test statistic is based on comparing the empirical characteristic functions of the residuals calculated ...; Created on 09 October 2018
24. Liberal red blood cell transfusions impair quality of life after cardiac surgery: (Publication); ... of life after the surgical intervention was added to the HRQoL questionnaire. Risk factors related to impaired quality of life were identified using univariate comparisons and multivariate regression techniques. RESULTS: ...; Created on 01 October 2018
25. Injury prediction in aerobic gymnastics based on anthropometric variables: (Publication); Objective Use logistic regression to determine a mathematical model which is able to predict injuries in aerobic gymnastics (AG) athletes, according to certain anthropometric characteristics. Subjects ...; Created on 11 October 2018
26. Predictive factors of satisfaction and quality of life after immediate breast reconstruction using the BREAST-Q: (Publication); ... design was used (n=101; =0.05; precision=10%), studying anthropometric, sociocultural data, Fagerstrom test and the BREAST-Q (c) questionnaire. A logistic regression analysis was performed to identify ...; Created on 08 October 2018
27. Sequential double cross-validation for assessment of added predictive ability in high-dimensional OMIC applications: (Publication); ... regression models. We propose several performance indices to summarize the two-stage prediction procedure and a permutation test to formally assess the added predictive value of a second omic set of predictors ...; Created on 03 October 2018
28. On the estimation of variance parameters in non-standard generalised linear mixed models: application to penalised smoothing: (Publication); ... An important application field of SOP is penalised regression estimation of models where multiple quadratic penalties act on the same regression coefficients. We discuss in detail two of those models: ...; Created on 02 October 2018
29. Plasma microRNAs as biomarkers for Lamin A/C-related dilated cardiomyopathy: (Publication); ... were also associated with the presence of pathogenic mutations in regression and ROC analyses. This signature also discriminates between LMNA (WT) healthy subjects and LMNA (MUT) carriers who are phenotypically ...; Created on 01 October 2018
30. Quantile regression and its empirical likelihood with missing response at random ...: (Publication); In this paper, we study the linear quantile regression model when response data are missing at random. Based on the inverse probability weight method, we establish an estimation equation on quantile regression ...; Created on 01 October 2018
31. Penalized empirical likelihood for quantile regression with missing covariates and auxiliary information ...: (Publication); Based on the inverse probability weight method, we, in this article, construct the empirical likelihood (EL) and penalized empirical likelihood (PEL) ratios of the parameter in the linear quantile regression ...; Created on 01 October 2018
32. Asymptotic distribution-free tests for semiparametric regressions with dependent data ...: (Publication); This article proposes a new general methodology for constructing nonparametric and semiparametric Asymptotically Distribution-Free (ADF) tests for semiparametric hypotheses in regression models for possibly ...; Created on 22 May 2018
33. Improving stability of prediction models based on correlated omics data by using network approaches: (Publication); Building prediction models based on complex omics datasets such as transcriptomics, proteomics, metabolomics remains a challenge in bioinformatics and biostatistics. Regularized regression techniques are ...; Created on 22 May 2018
34. Bootstrap-based procedures for inference in nonparametric receiver-operating characteristic curve regression analysis ...: (Publication); ... we focus on an estimator for the covariate-specific receiver-operating characteristic curve based on direct regression modelling and nonparametric smoothing techniques. This approach defines the class ...; Created on 22 May 2018
35. Computationally Efficient Goodness-of-Fit Tests for the Error Distribution in Nonparametric Regression ...: (Publication); Several procedures have been proposed for testing goodness-of-fit to the error distribution in nonparametric regression models. The null distribution of the associated test statistics is usually approximated ...; Created on 14 May 2018
36. Inverse Probability Weighted Cox Regression for Doubly Truncated Data ...: (Publication); ... truncated data have been intensively studied, only a few methods for fitting regression models have been suggested, and only for a limited number of covariates. In this article, we present a method to ...; Created on 20 February 2018
37. Quantile regression for partially linear varying-coefficient model with censoring indicators missing at random ...: (Publication); In this paper, we focus on the partially linear varying-coefficient quantile regression model when the data are right censored and the censoring indicator is missing at random. Based on the calibration ...; Created on 24 January 2018
38. Determining optimum wavelengths for leaf water content estimation from reflectance: A distance correlation approach: (Publication); ... different functional regression models to the data and compares the models to test the viability of estimating water content from reflectance. It then applies our methodology to select a small number of ...; Created on 24 January 2018
39. Sample Size Impact on the Categorisation of Continuous Variables in Clinical Prediction: (Publication); ... predictor variable in a logistic regression setting. Two different approaches to categorise predictor variables were compared. ...; Created on 10 October 2018
40. Sample Size Impact on the Categorisation of Continuous Variables in Clinical Prediction: (Publication); ... predictor variable in a logistic regression setting. Two different approaches to categorise predictor variables were compared. ...; Created on 10 October 2018
41. On the Combination of Omics Data for Prediction of Binary Outcomes: (Publication); ... of health traits. We review several approaches for the combination of omic markers in the context of binary outcome prediction, all based on double cross-validation and regularized regression models. We ...; Created on 10 October 2018
42. A weighted bootstrap approximation for comparing the error distributions in nonparametric regression ...: (Publication); Several procedures have been proposed for testing the equality of error distributions in two or more nonparametric regression models. Here we deal with methods based on comparing estimators of the cumulative ...; Created on 09 October 2018
43. A new approach to categorising continuous variables in prediction models: Proposal and validation: (Publication); ... by clinical researchers. This paper focuses on categorising a continuous predictor within a logistic regression model, in such a way that the best discriminative ability is obtained in terms of the highest ...; Created on 22 May 2018
44. A simple algorithm for the identification of clinical COPD phenotypes: (Publication); ... and regression trees (CARTs) were used to develop an algorithm for allocating patients to these subgroups. This algorithm was tested in 3651 patients from the COPD Cohorts Collaborative International Assessment ...; Created on 22 May 2018
45. Highly sensitive marker panel for guidance in Lung Cancer Rapid Diagnostic Units: (Publication); ... Matrix Metalloproteinases −1, −7, −9, CEA and CYFRA 21.1 were determined in 140 patients with respiratory symptoms (lung cancer and controls with/without benign pathology). Logistic Lasso regression was ...; Created on 18 September 2017
46. Comparison of two discrimination indexes in the categorisation of continuous predictors in time-to-event studies: (Publication); ... hazards regression model. In particular, we compared the c-index and the concordance probability estimator. We evaluated the empirical performance of both estimators through simulations. To categorise ...; Created on 18 September 2017
47. Sample size impact on the categorisation of continuous variables in clinical predictions: (Publication); ... predictor variable in a logistic regression setting. Two different approaches to categorise predictor variables were compared. ...; Created on 18 September 2017
48. npregfast: an R package for nonparametric estimation and inference in life sciences: (Publication); We present the R npregfast package via some applications involved with the study of living organisms. The package implements nonparametric estimation procedures in regression models with or without factor-by-curve ...; Created on 18 September 2017
49. Cisplatin resistance in cell models: evaluation of metallomic and biological predictive biomarkers to address early therapy failure: (Publication); ... as resistance indicators. Univariate linear regression analyses indicated that quantitation of cisplatin-induced G–G intra-strand adducts, measured 1 h after treatment, was the best predictor for viability ...; Created on 18 September 2017
50. Tumor programmed cell death ligand 1 expression correlates with nodal metastasis in patients with cutaneous squamous cell carcinoma of the head and neck.: (Publication); ... with cSCC. Cumulative/dynamic receiver operating characteristic curve was used to determine the optimal PD-L1 threshold. Kaplan-Meier estimators and Cox proportional hazards regression models were also ...; Created on 18 September 2017