نتایج جستجو برای: dilution risk
تعداد نتایج: 967654 فیلتر نتایج به سال:
objective: toxoplasma gondii infection, an intracellular parasite, is often asymptomatic or is caused by different clinical diseases without being detected. evaluation of igg, iga, and igm in order to diagnose the pending toxoplasmosis may confront some problems. several researches has showned that toxo igg avidity can be useful in the recent active toxoplasmosis. in current study, modification...
BACKGROUND Single measurements of modifiable risk factors may underestimate associations with outcomes in cohorts. We aimed to compare risk estimates of myocardial infarction (MI) and venous thromboembolism (VTE) by atherosclerotic risk factors during long follow-up using time-fixed analyses without and with correction for regression dilution and time-varying analyses. METHODS The study inclu...
BACKGROUND Within-person variability in measured values of a risk factor can bias its association with disease. We investigated the extent of regression dilution bias in calculated variables and its implications for comparing the aetiological associations of risk factors. METHODS Using a numerical illustration and repeats from 42,300 individuals (12 cohorts), we estimated regression dilution ...
The laboratory reliability and validity of sex hormone measurements were examined at multiple levels, including lower levels characteristic of children and postmenopausal women. Serum was drawn from four adult male and four adult female healthy volunteers. From each individual's serum pool, a medium- and a low-dilution pool were created. Biochemical analyses for total and non-sex hormone-bindin...
A hierarchical Bayes associative network model for brand information is developed and tested to measure the extent of harm from trademark dilution. In the proposed model, category activation thresholds are modeled in terms of brand/category familiarity, activation flows are modeled in terms of relative category knowledge, and consumer confusion and its correlates are used to capture the asymmet...
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