ANCOVA: a heteroscedastic global test when there is curvature and two covariates

Robust ANCOVA: Confidence Intervals That Have Some Specified Simultaneous Probability Coverage When There Is Curvature And Two Covariates

ANCOVA: A Global Test Based on a Robust Measure of Location or Quantiles When There Is Curvature

For two independent groups, let Mj(x) be some conditional measure of location for the jth group associated with some random variable Y , given that some covariate X = x. When Mj(x) is a robust measure of location, or even some conditional quantile of Y , given X, methods have been proposed and studied that are aimed at testing H0: M1(x) = M2(x) that deal with curvature in a flexible manner. In ...

General Anxiety and Dental Fear: Is There A Relationship?

Introduction: Anxiety is an emotional state that helps healthy people defend themselves against threats. Dental anxiety is referred to a patient's specific response to stressful dental practices. The prevalence of dental anxiety is estimated to be between 3-43%. The relation between dental caries and dental anxiety is well understood, which happen as the result...

Salivary and Serum Ferritin Levels: Is There a Correlation?

Background and Aim: Blood samples are used for the diagnosis of many diseases. Serum ferritin level is known to be a marker of anemia and iron overload disorders. However, blood collection is an invasive method. Saliva, as a bio-fluid, contains a va-riety of important components that are successfully used for assessment of body health. The use of saliva samples for ferritin evaluation can be re...

Why Believe That There Is a God?

This article presents an argument for the existence of God, showing that the evident phenomena are best explained by supposing that a God causes them. The argument is based on the inductive force of four very evident general phenomena: that there is a physical Universe; that it is governed by very simple natural laws; that those laws are such as to lead to the existence of human bodies; and tha...