منابع مشابه
MMA:DMA ratios reversed.
Mark Wheeler's Focus article, "Measuring Mercury" (1), which appeared in the August 1996 issue of EHP, contained a serious omission. Wheeler concentrated on methyl mercury and, to a lesser extent, elemental mercury in dental amalgams. He failed to mention the relatively recently described but extremely significant exposures to elemental mercury in ethnically Hispanic and Caribbean homes, conseq...
متن کاملGrowth response and ion distribution of two canola varieties to different potassium to sodium ratios
Rapeseed (Brassica napus L.) is a crop relatively tolerant to salt. The effect of different ratios of NaCl/KCl was studied in two cultivars (Hyola308 and Kristina) of Rapeseed in 2002. Canola seedlings were grown in Hoagland’s solutions, which were salinized by different ratios of NaCl/KCl. The treatments or KCl:NaCl ratios were 0:0 (control);10:10; 20:0 (Total Added Salt or TAS=20 mol.m-3), 0:...
متن کاملSubject-specific odds ratios in binomial GLMMs with continuous response
Riassunto: In un contesto di regressione, la dicotomizzazione di una variabile risposta continua è solitamente dettata dall’esigenza di ottenere una misura del rapporto di quote (odds ratio) che ne quantifichi l’associazione con uno o più fattori di rischio. Prendendo spunto da un lavoro recentemente pubblicato, in questo articolo si esplora la possibilità di ottenere stime del rapporto di quot...
متن کاملOn the Reversed Average Intensity Order
Based on the increasing property of ratio of average reversed hazard rates of two non-negative random variables a new stochastic order for the sake of comparison of two lifetime distributions is proposed. This stochastic order admits some distinguishing properties. In order to illustrate the obtained results, a semi-parametric model which is called reverse hazard power and a mixture model of pr...
متن کاملResponse to letter to the editor by A. Huitfeldt Re: Odds ratios deconstructed: a new way to understand and explain odds ratios as conditional risk ratios.
OBJECTIVES The aim of this analysis was to provide an alternative derivation of the odds ratio (OR) to provide an intuitive meaning, freeing it from any mention of odds, which may make it a more useful concept for clinicians to use when describing treatment effect. STUDY DESIGN AND SETTING By examining the four possible combinations of treatment/control and corresponding outcomes, we consider...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1997
ISSN: 0091-6765
DOI: 10.2307/3433254