Sentence examples for precise ascertainment from inspiring English sources
However, a precise ascertainment of the age of onset or diagnosis for each autoimmune disease based on self-report was very difficult due to the fact that the natural course of many autoimmune diseases can include a subclinical phase that does not meet stringent clinical diagnosis (Papi et al. 2007; Poppe and Glinoer 2003; Ulff-Moller et al. 2009).
While it is difficult to model the precise ascertainment process we have some additional information which allows us to study the effects of two other ascertainment schemes: first we consider the networks generated by taking all proteins which were included in the expression analysis of Cho et al. [ 40] as well as the 20%, 40 %, 60 and 80%and80%ofeins with the highest exproteins levels.
Better exposure assessment and more precise phenotype ascertainment are the most efficient ways to increase the power in such studies.
Precise dental ascertainment of findings is the key to achieving adequate diagnostics, as well as the therapy based on this and the best possible treatment of the patient.
Our chart validation of coded definitions demonstrated reasonable sensitivity and positive predictive value for TSS-specific and possible TSS codes at a single institution; however, discharge coding among institutions is not necessarily consistent or precise and can result in ascertainment errors when applied to larger discharge populations.
In particular, RCTs allow for precise measurement of drug exposure and consistent ascertainment of phenotype; randomization produces unbiased treatment assignments and helps balance unmeasured confounding factors [ 18].
Although simple sequence analysis of regulatory regions from diverse and related members of a species can readily ascertain whether sequence variation is present and heritable, ascertainment of impact on gene expression from sequence alone is less precise.
BP ascertainment on a single day does not allow a precise measurement of the individual's true BP levels.
Other advantages of well-designed clinical trials include relatively precise estimates of the environmental exposures (treatments) and of the phenotypes, careful ascertainment of participants, randomization of exposures, close predetermined follow-up, and hypothesis-driven design.
One strength of our study is the virtual absence of losses to follow-up, as a result of the precise linkage between our cohort and the Danish population based registers and complete ascertainment of diagnoses for ovarian cancer.
