Results 111 to 120 of about 782,515 (314)
Confidence Intervals for Estimates of Elasticities [PDF]
Elasticities are often estimated from the results of demand analysis however, drawing inferences from them may involve assumptions that could influence the outcome.
D. J. Slottje +1 more
core
Confidence intervals for the area under the receiver operating characteristic curve in the presence of ignorable missing data [PDF]
arXiv, 2018 Receiver operating characteristic (ROC) curves are widely used as a measure of accuracy of diagnostic tests and can be summarized using the area under the ROC curve (AUC). Often, it is useful to construct a confidence intervals for the AUC, however, since there are a number of different proposed methods to measure variance of the AUC, there are thus ...
arxiv
Arthritis Care &Research, EarlyView.Objective Walk With Ease (WWE) is a six‐week arthritis‐appropriate evidence‐based physical activity program traditionally offered in a face‐to‐face format. Because many populations encounter participation barriers to in‐person programs, WWE was modified for telephone delivery (WWE‐T).
Christine A. Pellegrini +5 more
wiley +1 more source
Asymptotic properties of robust three-stage procedure based on bootstrap for m-estimator [PDF]
, 2000 The paper concerns the fixed-width confidence intervals for location based on M- estimators in the location model. A robust three-stage procedure is proposed and its asymptotic properties are studied.
Hlávka, Zdeněk
core
Arthritis Care &Research, EarlyView.Objective Patients with knee osteoarthritis rely on symptomatic treatments, in which up to 75% of the pain reduction can be attributed to the placebo effect. This effect may vary based on treatment type (eg, biologics vs nonbiologic injection) and route of administration (eg, intra‐articular vs topical vs oral).
Johanna M. Borst +5 more
wiley +1 more source
Arthritis Care &Research, EarlyView.Objective This study analyzed longitudinal trajectories of soluble Flt1 (sFlt1) levels, placenta growth factor (PlGF) levels, and sFlt1:PlGF ratios in a cohort of pregnant patients with systemic lupus erythematosus (SLE). Methods Blood samples were collected (14–18, 24–26, 30–32, 34–36, and 38–40 weeks), stored at −80°C, and evaluated for serum levels ...
Nilson R. de Jesús +7 more
wiley +1 more source
Nonparametric Conditional Inference for Regression Coefficients with Application to Configural Polysampling [PDF]
, 2007 We consider inference procedures, conditional on an observed ancillary statistic, for regression coefficients under a linear regression setup where the unknown error distribution is specified nonparametrically.
Ho, Yvonne, Lee, Stephen
core +1 more source
Using Quantile Regression Approach to Analyze Price Movements of Agricultural Products in China
Journal of Integrative Agriculture, 2012 This paper studies how the price movements of pork, chicken and egg respond to those of related cost factors in short terms in Chinese market. We employ a linear quantile approach not only to explore potential data heteroscedasticity but also to generate
Gan-qiong LI +4 more
doaj
CFA with binary variables in small samples: A comparison of two methods
Frontiers in Psychology, 2015 Asymptotically optimal correlation structure methods with binary data can break down in small samples. A new correlation structure methodology based on a recently developed odds-ratio (OR) approximation to the tetrachoric correlation coefficient is ...
Victoria eSavalei +2 more
doaj +1 more source
Arthritis Care &Research, EarlyView.Objective We aimed to assess whether high‐sensitivity C‐reactive protein (hsCRP) levels could predict the development of psoriatic arthritis (PsA) in patients with psoriasis. Methods We analyzed data from a prospective cohort of patients with psoriasis without PsA at enrollment.
Lihi Eder +5 more
wiley +1 more source