OBJECTIVES To assess the diagnostic power of a new cervical consistency index (CCI) obtained using transvaginal sonography for the prediction of spontaneous preterm birth (PTB) and to establish reference ranges for this new variable. METHODS Included in this prospective cross-sectional study were 1115 singleton pregnancies at 5-36 weeks of gestation. Anteroposterior cervical diameter was meas...

background: the national institutes of health stroke scale (nihss) can objectively quantify the severity of stroke. however no information is available about psychometric properties and it’s applicability in the iranian population. objectives: the present study purposed by utilization of this instrument for neurological deficits measurement due to stroke, to determine the internal consistency r...

BACKGROUND One complication of total knee arthroplasty (TKA) is patella baja (PB). Patellar tendon shortening and joint line elevation are two main causes of PB. The purpose of this study was to determine the incidence of PB before and after TKA by measuring the patellar height and provide evidence for choosing a suitable index. METHODS In total, 256 consecutive patients who underwent primary...

An item-fit index is a measure of how accurately a set of item responses can be predicted by the test design model. In a diagnostic assessment where items test student mastery on a cognitive model of skills, such an index is needed to determine the alignment between the item responses and skills that each item is designed to measure. In this study, we introduce the Item Consistency Index (ICI),...

The goal of this paper is to provide estimators of the tail index and extreme quantiles of a heavy-tailed random variable when it is righttruncated. The weak consistency and asymptotic normality of the estimators are established. The finite sample performance of our estimators is illustrated on a simulation study and we showcase our estimators on a real set of failure data. keywords: Asymptotic...

Model credibility index is defined to be a sample size under which the power of rejection equals 0.5. It applies goodness-of-fit testing thinking and uses a one-number summary statistic as an assessment tool in a false model world. The estimation of the model credibility index involves a bootstrap resampling technique. To assess the consistency of the estimator of model credibility index, we in...

Hybrid memory systems consisting of DRAM and Non-Volatile Memory are promising to persist data fast. The index design of existing key-value stores for hybrid memory fails to utilize its specific performance characteristics: fast writes in DRAM, slow writes in NVM, and similar reads in DRAM and NVM. This paper presents HiKV, a persistent key-value store with the central idea of constructing a hy...

Inflationary consistency equations relate the scalar and tensor perturbations. We elucidate the infinite hierarchy of consistency equations of single-field inflation, the first of which is the well-known relation A2T/A 2 S = −nT/2 between the amplitudes and the tensor spectral index. We write a general expression for all consistency equations both to first and second-order in the slow-roll expa...

Computer simulations of character-state evolution in 8, 16, 32, and 64 ingroup taxa with a known set of relationships demonstrate that the maximum probability of correct phylogenetic inference increases with the number of variable (or informative) characters and their consistency index and decreases with the number of taxa, when the consistency index has been standardized to eliminate its depen...