a-d Zinc-deficient field screening, a Extent of tolerant accessions b Latitude-wise distribution, c Longitude-wide distribution, d Area of preference, e-h Greenhouse screening, e Extent of tolerant accessions, f Latitude-wise distribution, f Longitude-wide distribution, g Area of preference.
For a continuously dosed drug without screening costs, extent of benefit does not influence the cost-effectiveness, as changes in the denominator (QALYs gained) are balanced by equivalent changes in the numerator (required duration of therapy that is, total cost of drug).
A brief description of the testing technique and its clinical and analytical sensitivities for the specific population being screened (ie, extent of mutation screening and coverage of disease-associated mutations, region and limits of detection) should be provided.
Six Tim knockdown cell lines were subsequently cloned from each shRNA-transduced mES cell population, and screened for the extent of Tim knockdown by immunoblot analysis (Fig. 3).
The following factors were retained as independent predictors of malignancy: radiological grade, episode of screening, mammographic extent of microcalcifications and association with a palpable mass.
Radiological grade was the most important independent predictor of malignancy, followed by detection after the first episode of screening, mammographic extent of microcalcifications and association with a clinically palpable mass.
Magnetic resonance imaging (MRI) can be a valuable addition to the diagnostic work-up of a patient with a breast abnormality or biopsy-proven cancer and it is recommended by the American College of Radiology (ACR) in selected cases for screening, assessing extent of disease and for additional evaluation of clinical and imaging findings.
Cervical screening, for example, is thought to be more effective in detecting squamous cell than adenocarcinomas (Mitchell et al, 1995; Bergstrom et al, 1999); while all studies in this meta-analysis provided results adjusted for screening, the extent of adjustment was variable.
Accurate estimation of sojourn time facilitates inference on the optimum interval between screens, the likely effectiveness of screening, and the extent of overdiagnosis.
However, there were differences between sources in the classification of tests as screening and the extent of missing information.
