Results 121 to 130 of about 20,763 (296)

Validation of model predicting furcation involvement in newly crowned teeth—A 5‐year retrospective follow‐up

Journal of Periodontology, EarlyView.
Abstract Background This study aimed to perform a prediction model validation for furcation involvement (FI) risk in molars receiving a new fixed prosthesis (FP) using a unique cohort assessed at three time points. Methods Following the Oral Health Statistical (OHStat) reporting guidelines, this cohort study examined 181 patients (203 molars) from 2018–
Khushboo Kalani, Giuseppe Troiano, Asfandyar Sheikh, Era Kakar, Hom‐Lay Wang, Muhammad H. A. Saleh   +5 more
wiley   +1 more source

Detection and Estimation of T Wave Alternans with Matched Filter and Nonparametric Bootstrap Test

, 2009
Though alternans phenomena in the cardiac repolarization phase has been shown to be related to arrhythmgenesis, a definitive estimation method from the T wave of ECG recordings is not yet available. We propose a statistical signal processing scheme which
Barquero Pérez, Óscar, Rojo-Álvarez, José Luis, Gimeno Blanes, J, García Alberola, A, Goya Esteban, R, Mora Jimenez, I   +5 more
core  

Bootstrap-quantile ridge estimator for linear regression with applications.

PLoS ONE
Bootstrap is a simple, yet powerful method of estimation based on the concept of random sampling with replacement. The ridge regression using a biasing parameter has become a viable alternative to the ordinary least square regression model for the ...
Irum Sajjad Dar, Sohail Chand
doaj   +1 more source

The estimation of number of bootstrap replications for the nonparametric bootstrap

, 2004
Non-parametric bootstrap can be implicated at small size of random sample from unknown distribution when statistical methods are used. The paper deals with the problem, how many non-parametric bootstrap replications have to be done at estimation of bias abd which extent of errors might be caused.
openaire   +1 more source

A Nonparametric Bootstrap Test and Estimation for Change

Communications for Statistical Applications and Methods, 2007
This paper deals with the problem of testing the existence of change in mean and estimating the change-point using nonparametric bootstrap technique. A test statistic using Gombay and Horvath (1990)'s functional form is applied to derive a test statistic and nonparametric change-point estimator with bootstrapping idea.
openaire   +2 more sources

Development of simple predictive models of tooth loss in the community setting

Journal of Periodontology, EarlyView.
Abstract Background A simple tool for predicting the risk of tooth loss is considered valuable for the implementation of early preventive measures in community settings. This study aimed to establish a simple predictive model for tooth loss in a community‐dwelling Japanese population.
Michiko Furuta, Takanori Honda, Shinya Kageyama, Nanami Sawada, Satoko Sakata, Jun Hata, Toshiharu Ninomiya, Toru Takeshita   +7 more
wiley   +1 more source

How good a map ? Putting small area estimation to the test [PDF]

The authors examine the performance of small area welfare estimation. The method combines census and survey data to produce spatially disaggregated poverty and inequality estimates.
Demombynes, Gabriel, Lanjouw, Jean O., Lanjouw, Peter, Elbers, Chris   +3 more
core  

Paraben Exposure in the General Taiwanese Population: Reference Values, Personal Care Products, and Cumulative Risk Assessment

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT Parabens (parahydroxybenzoates), which are frequently used as preservatives in pharmaceuticals, foodstuffs, and personal care products, have recently attracted considerable attention due to their adverse health effects and endocrine‐disrupting properties.
Jung‐Wei Chang, Yen‐Hsuan Huang, Hsin‐Chang Chen, Vinoth Kumar Ponnusamy, Wan‐Ting Chang, Po‐Chin Huang   +5 more
wiley   +1 more source

A Self-Normalized Online Monitoring Method Based on the Characteristic Function

Mathematics
The goal of nonparametric online monitoring methods is to quickly detect structural changes in the distribution of a data stream. This work is concerned with a nonparametric self-normalized monitoring method based on the difference of empirical ...
Yang Wang, Baoying Yang
doaj   +1 more source

Microbiological Mechanisms of Sand‐Mixed Soil Improvement in Continuously Cropped Soil

Land Degradation &Development, EarlyView.
ABSTRACT Sand‐mix soil is a widely adopted method for soil improvement in agricultural production. However, beyond the evident enhancement of physical structure, the mechanisms by which sand‐mix soil promotes crop root growth by influencing soil physicochemical properties and microbial communities remain insufficiently understood.
Yue Huang, Meng Jia, Xuanquan Zhu, Yuxiang Bai, Jie Li, Tikun Zhang, Xiaojun Zhao, Weidi Tang, Mengyuan Lyu, Xingyang Xu, Ge Wang, Na Wang   +11 more
wiley   +1 more source