Abstract The confidence interval is an important statistical estimator of population location and dispersion parameters. paper considers a robust modified interval, which adjustment the Student’s t based on decile mean standard deviation for estimating skewed distribution. efficiency proposed evaluated basis extensive Monte Carlo simulation study. coverage ratio average width are compared with ...

A series of studies in black and white women and men have suggested that serum g-glutamyltransferase (GGT) within its normal range might be an early marker of oxidative stress. If serum GGT is a marker of oxidative stress, it might have important implications both clinically and epidemiologically because measurement of serum GGT is easy, reliable, and not expensive. We examined the cross-sectio...

Does Noise Create the Size and Value Effects? Black (1986) and Summers (1986) suggest that the price of a stock can deviate from its intrinsic value by a random noise. In this paper, we show that a stock with such a noise has a higher expected return when its market capitalization or price-dividend ratio is low, because a low market capitalization or price-dividend ratio is a signal that the no...

BACKGROUND The effects of hospital-acquired Clostridium difficile infection (CDI) on patient outcomes are incompletely understood. We conducted this study to determine the independent impact of hospital-acquired CDI on in-hospital mortality after adjusting for the time-varying nature of CDI and baseline mortality risk at hospital admission. METHODS This retrospective observational study used ...

BACKGROUND There is considerable unexplained variation in death rates between deprived areas of Britain. This analysis assesses the degree of variation in socio-demographic factors among deprivation deciles and how variables associated with deaths differ among the most deprived areas. METHODS Death rates 1996-2001, Carstairs' 2001 deprivation score and indicators, population density, black an...

We determined the association of cord blood 25-hydroxyvitamin D [25(OH)D] with birth weight and the risk of small for gestational age (SGA). As part of the China-Anhui Birth Cohort (C-ABC) study, we measured cord blood levels of 25(OH)D in 1491 neonates in Hefei, China. The data on maternal sociodemographic characteristics, health status, lifestyle, birth outcomes were prospectively collected. ...

INTRODUCTION Successful health system planning and management is dependent on well informed decisions, so having complete knowledge about medical services' utilization is essential for resource allocation and health plans. The main goal of this study is identification of factors effecting inpatient and outpatient services utilization in public and private sectors. METHODS This study encompass...