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Significant Positive Predictors (significant + positive_predictor)
Selected AbstractsFactors Associated With Positive D-dimer Results in Patients Evaluated for Pulmonary EmbolismACADEMIC EMERGENCY MEDICINE, Issue 6 2010Christopher Kabrhel MD Abstract Objectives:, Available D-dimer assays have low specificity and may increase radiographic testing for pulmonary embolism (PE). To help clinicians better target testing, this study sought to quantify the effect of risk factors for a positive quantitative D-dimer in patients evaluated for PE. Methods:, This was a prospective, multicenter, observational study. Emergency department (ED) patients evaluated for PE with a quantitative D-dimer were eligible for inclusion. The main outcome of interest was a positive D-dimer. Odds ratio (ORs) and 95% confidence intervals (CIs) were determined by multivariable logistic regression. Adjusted estimates of relative risk were also calculated. Results:, A total of 4,346 patients had D-dimer testing, of whom 2,930 (67%) were women. A total of 2,500 (57%) were white, 1,474 (34%) were black or African American, 238 (6%) were Hispanic, and 144 (3%) were of other race or ethnicity. The mean (±SD) age was 48 (±17) years. Overall, 1,903 (44%) D-dimers were positive. Model fit was adequate (c-statistic = 0.739, Hosmer and Lemeshow p-value = 0.13). Significant positive predictors of D-dimer positive included female sex; increasing age; black (vs. white) race; cocaine use; general, limb, or neurologic immobility; hemoptysis; hemodialysis; active malignancy; rheumatoid arthritis; lupus; sickle cell disease; prior venous thromboembolism (VTE; not under treatment); pregnancy and postpartum state; and abdominal, chest, orthopedic, or other surgery. Warfarin use was protective. In contrast, several variables known to be associated with PE were not associated with positive D-dimer results: body mass index (BMI), estrogen use, family history of PE, (inactive) malignancy, thrombophilia, trauma within 4 weeks, travel, and prior VTE (under treatment). Conclusions:, Many factors are associated with a positive D-dimer test. The effect of these factors on the usefulness of the test should be considered prior to ordering a D-dimer. ACADEMIC EMERGENCY MEDICINE 2010; 17:589,597 © 2010 by the Society for Academic Emergency Medicine [source] Religious Fundamentalism as a Predictor of Prejudice: A Two-Component ModelJOURNAL FOR THE SCIENTIFIC STUDY OF RELIGION, Issue 4 2002Brian Laythe The present study aims to determine whether the empirical relationship between religious fundamentalism and prejudice can be accounted for in terms of the mutually opposing effects of Christian orthodoxy and right-wing authoritarianism using multiple regression. Three separate samples (total n = 320) completed measures of religious fundamentalism, right-wing authoritarianism, Christian orthodoxy, ethnic prejudice, and homosexual prejudice. Consistent with previous research, fundamentalism (1) was essentially unrelated to ethnic prejudice when considered alone; (2) was positively related to ethnic prejudice when orthodoxy was statistically controlled; and (3) was negatively related to ethnic prejudice when authoritarianism was statistically controlled. Finally, when both authoritarianism and orthodoxy were controlled simultaneously, fundamentalism was again unrelated to prejudice, whereas orthodoxy was negatively related and authoritarianism positively related. In contrast, fundamentalism was a significant positive predictor of prejudice against gays and lesbians irrespective of whether authoritarianism and/or orthodoxy were statistically controlled. [source] The Effects of Interactive News Presentation on Perceived User Satisfaction of Online Community NewspapersJOURNAL OF COMPUTER-MEDIATED COMMUNICATION, Issue 4 2009Deborah S. Chung Using a statewide, Web-based survey, this study examines the associations between online community news audiences' uses of interactive features offered in various news presentations and the perceived satisfaction of community news sites. In addition, the study aims to identify associations between different types of interactive news presentation styles and levels of satisfaction. Results indicate that use of interactive features is positively associated with perceived satisfaction with the exception of forums and Q&A features. Results also reveal that customization features, such as content submissions, letter-to-the-editor, and e-mail byline links, are the sole significant positive predictor of perceived satisfaction toward community news sites. [source] Structural Antecedents to Knowledge and Participation: Extending the Knowledge Gap Concept to ParticipationJOURNAL OF COMMUNICATION, Issue 2 2007Jaeho Cho This paper investigates relationships between community characteristics and levels of knowledge and participation examined at both the individual and the community levels. This research extends the knowledge gap concept to a parallel phenomenon, the participation gap. Results from the Social Capital Benchmark Survey 2000 showed that community density, education, and cohesion were significant positive predictors of knowledge but less consistent predictors of participation at the individual level. At the community level, relationships were even stronger, though cohesion was associated with higher mean levels of participation and reduced participation gaps, whereas population density was associated with lower levels of participation and increased gaps. [source] Predictors of Perceived Susceptibility to Sport-Related Injury among Competitive Runners: The Role of Previous Experience, Neuroticism, and Passion for RunningAPPLIED PSYCHOLOGY, Issue 4 2009Yannick Stephan Whether individuals take steps to protect themselves against sport-related injury may depend on their perceived susceptibility to injury (Williams-Avery & MacKinnon, 1996). However, little is known about the determinants of perceived susceptibility to sport-related injury. The purpose of the present study is to identify the relations of previous experiences with injury, neuroticism, and passion with perceived susceptibility to sport-related injury among competitive runners. One hundred and seventy competitive runners reported the number of injuries sustained during the last year and completed the neuroticism scale of the NEO-PIR and the Passion Scale. Separate regression analysis revealed that previous experiences with injury, neuroticism, and obsessive passion were significant positive predictors of perceived susceptibility, whereas harmonious passion was significantly and negatively related to perceived susceptibility. When considered simultaneously, previous experiences, neuroticism, and obsessive passion explained unique variance in perceived susceptibility to sport-related injury. This study revealed that perceived susceptibility to sport-related injury is dependent on several distinct variables. Thus, to be effective, injury preventive actions aimed at runners' behaviour modification need to take into account that runners' perceived susceptibility to sport has multiple predictors. L'adoption par les individus de comportements de prévention de la blessure en sport est liée à leur vulnérabilité perçue à celle-ci (Williams-Avery & MacKinnon, 1996). Cependant, aucune étude ne s'est intéressée aux déterminants de cette dimension dans le contexte sportif. L'objectif de cette étude était d'identifier les relations entre les expériences passées avec une ou plusieurs blessures, le névrosisme, et la passion pour l'activité et la vulnérabilité perçue à la blessure chez des coureurs à pied. 170 coureurs compétitifs ont reporté le nombre de blessures contractées lors de la saison précédente, et ont répondu à l'échelle de névrosisme du NEO-PIR, et à l'échelle de passion en sport. Des analyses de régression séparées révèlent une contribution positive des expériences passées avec la blessure, du névrosisme, et de la passion obsessionnelle sur la vulnérabilité perçue, alors que la passion harmonieuse contribue négativement à cette dimension. Une analyse de régression multiple intégrant l'ensemble des prédicteurs révèle un lien significatif et positif entre les expériences passées, le névrosisme, la passion obsessionnelle et la vulnérabilité perçue à la blessure. Cette étude confirme que la perception de vulnérabilité est dépendante de dimensions variées et distinctes. Les actions de prévention de la blessure axées sur les changements de perception de vulnérabilitéà la blessure à des fins de modification des comportements doivent prendre en considération les prédicteurs de cette dimension afin d'être efficaces. [source] Patterns of Richness and Abundance in a Tropical African Leaf-litter Herpetofauna,BIOTROPICA, Issue 3 2001James R. Vonesh ABSTRACT I compared species richness and habitat correlates of leaf-litter herpetofaunal abundance in undisturbed and selectively logged forests, and an abandoned pine plantation in Kibale National Park, Uganda. I sampled 50 randomly located 25 m2 litter plots in each area during the wet and dry seasons in 1997. Ten anuran, five lizard, and three snake species were captured in plots over the study. Assemblage composition was most similar at logged and unlogged sites. The logged forest herpetofauna had higher species richness and abundance than the unlogged forest, but diversity was greater in the unlogged forest due to greater evenness. In contrast, the pine plantation site had the highest richness, abundance, and evenness of the three study sites, but species composition was distinct from the other areas. Herpetofaunal densities were significantly lower in all three areas during the dry season than in the wet season. During the dry season, soil moisture, litter mass, topography, shrub cover, and number of fallen logs were significant positive predictors of herpetofaunal presence in litter plots, but only soil moisture was significant in the wet season. The interaction of moisture and topography appears to be important in determining seasonal patterns of litter herpetofaunal distribution. Comparison of litter herpetofaunal studies across the tropics have shown that mid-elevation faunas generally support fewer species than lowland faunas. Compared with other tropical mid-elevation litter faunas, Kibale supports an intermediate number of species, but at lower densities than observed at any other mid-elevation site reported in the literature. [source] | ||||||||||