An important issue for robust inference is to examine the stability of the asymptotic level and power of the test statistic in the presence of contaminated data. Most existing results are derived in finite-dimensional settings with some particular choices of loss functions. This paper re-examines this issue by allowing for a diverging number of parameters combined with a broader array of robust...

The Iranian banking sector has undergone huge and substantial reform in the last decade; privatization, establishment of private banks and development of modern technologies (IT). This paper investigates the competitive condition of the Iranian banking industry over the period 2005-2010 using the H-statistic proposed by Panzar and Rosse. The properties of this non-structural methodology make it...

bedsore is a very important problem in bedridden patients. it affects patients’ lives and imposes substantial costs to society. its incidence approaches 38% and its annual prevalence is estimated to be 14.8% in patients who are admitted in hospitals. the national pressure ulcer advisory panel (npuap) and the european pressure ulcer advisory panel (epuap) define bedsore as “a localized injury to...

background: because prehypertension identifies children most at risk for the development of future hypertensive disease, the purpose of this study was, to examine the association of prehypertension with risk factors for cardiovascular disease (cvd) in a large sample of youths participating in the community-based prevention education program family heart study. methods: we estimated blood pressu...

Questions relevant to DSM-V alcohol use disorders (AUD) include whether dimensional measures provide more information than categorical diagnoses, whether to combine abuse and dependence criteria, and whether to add a new diagnostic criterion, binge drinking. Binary and dimensional models of three versions of AUD criteria were investigated: (1) dependence criteria; (2) abuse and dependence crite...

Most confidence intervals, whether based on asymptotic theory or the bootstrap, are implicitly based on inverting a Wald test. Since Wald test statistics are not invariant under nonlinear reparametrizations of the restrictions they test, confidence intervals based on them are not invariant either. This fact explains the well-known non invariance of bootstrap confidence intervals obtained by Hal...

SUMMARY To compare proportions with several independent binomial samples, we recommend a method of constructing simultaneous confidence intervals that uses the studentized range distribution with a score statistic. It applies to a variety of measures, including the difference of proportions, odds ratio, and relative risk. For the odds ratio, a simulation study suggests that the method has cover...