Often our concern in an epidemiological study is to assess the chance that an animal that possesses certain traits also has a specific disease. These traits might be intrinsic risk factors such as a specific sex, age or weight or extrinsic risk factors such as housing or management related issues (see Chapter 3). The chance that a healthy animal exposed to a risk factor becomes diseased is defi...

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected].. Taylor & Francis, Ltd. and American Statistical Associati...

the purpose of this paper is to investigate the association between the intellectual capital of firms and their earnings quality. the research was conducted with 158 accepted companies and 948 firm-year observations from iran stock market. empirical studies were conducted based on hypothesis by value added intellectual coefficient as measures of intellectual capital and taking absolute value of...

this study was carried out to investigate the association between infection to giardia sp. and occurrence of diarrhea in urmia , iran. fecal samples were collected from 246 calves ( 34 diarrheic and 212 non-diarrheic ) and examined for the presence of giardia spp. cysts using a quantitative centrifugation concentration zinc sulfate flotation technique. analysis of data showed that the relative ...

Land use regression (LUR) models have been globally used to estimate long-term air pollution exposures. The present study aimed to analyze the association of different land use types and traffic measures with air pollutants in Tehran, Iran, as part of the future development of LUR models. Data of the particulate matter (PM10), sulfur dioxide (SO2), and nitrogen dioxide (NO2) were extracted from...