نتایج جستجو برای: cumulative exposure model
تعداد نتایج: 2426432 فیلتر نتایج به سال:
In a typical case-control study, exposure information is collected at a single time point for the cases and controls. However, case-control studies are often embedded in existing cohort studies containing a wealth of longitudinal exposure history about the participants. Recent medical studies have indicated that incorporating past exposure history, or a constructed summary measure of cumulative...
OBJECTIVE To estimate the cumulative exposure to bacteraemia from dental procedures currently recommended for antibiotic prophylaxis and compare this with cumulative exposure from dental procedures not recommended for prophylaxis. DESIGN Retrospective analysis. SETTING University and teaching hospital maxillofacial and dental department. PATIENTS 136 children with severe congenital cardia...
The term "repetitive head impacts" (RHI) refers to the cumulative exposure to concussive and subconcussive events. Although RHI are believed to increase risk for later-life neurological consequences (including chronic traumatic encephalopathy), quantitative analysis of this relationship has not yet been examined because of the lack of validated tools to quantify lifetime RHI exposure. The objec...
OBJECTIVES To study the relation between occupational exposure to ceramic fibres during manufacture and respiratory health. METHODS The respiratory health of 628 current employees in the manufacture of ceramic fibres in seven European plants in three countries was studied with a respiratory questionnaire, lung function tests, and chest radiography. Simultaneous plant hygiene surveys measured ...
A process model is presented to account for infant looking patterns in habituation and preferential looking experiments. The model emphasizes the infant’s own role in controlling exposure to stimuli. Operating on the level of individual fixations in continuous time, the model ties cumulative looking times to patterns of individual looks. The process described does not make use of a spatial map ...
OBJECTIVE The goal was to determine whether cumulative exposure to violence in childhood and adolescence contributes to disparities in self-rated health among a nationally representative sample of US adolescents. METHODS The National Longitudinal Survey of Youth 1997 is an ongoing, 8-year (1997-2004), longitudinal, cohort study of youths who were 12 to 18 years of age at baseline (N = 8224). ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید