The former, and in its original form (HALT-90) also the latter, depend upon enquiry relating to the three months prior to the interview, an approach subject to the limitations and errors (and possible biases) of recall over such a long period [7].
Liver biopsy for determining disease grade and stage has limitations (sampling error and observer error) and risks [8], which probably explained the small number of studies with baseline and follow-up biopsies.
Although physical performance tests were related to self-reported limitations, measurement error and the effort-dependence of performance measures may have led to an underestimate of these associations.
While it was not possible using standard GLMMIX syntax to obtain estimates for the full sample or for samples of size 10% or more (due to well known computational convergence and memory limitation errors), we were able to obtain estimates for the full sample using tricks such as sorting by ID and time and removing them from the class statement.
He considers mental models from two points of view: the first seeks to evaluate the processes underlying some of the variety of human understanding; the second examines limitations and errors in thought and imagination that occur as a natural by-product of normal human understanding.
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This original approach, coupling pollen and remotely sensed land cover data, presents some limitations and errors affecting both datasets although it gives promising results.
Error limitation Clerical error / interpretation, Error processing; Error distribution Administration error The error of prescribing may relate to the decision to prescribe a drug, and the process of writing the prescription (quality and completeness of essential information).
There are many potential sources for discrepancies: different usage of the building in model and reality, design, construction and commissioning deficiencies, software limitation and modeling errors and different weather in reality than in the model are the factors typically considered.
