Her retailers sort the T-shirts by their own three-tier grading system.
The rules for England and Wales, which came into force last October, set out a three-tier grading system for nursing care.
The extent and severity of cerebral amyloid angiopathy was determined based on a four-tier grading system (Olichney et al., 1996; Lashley et al., 2008).
The staining intensity was evaluated with a four-tier grading system (0 = negative, 1 = weak, 2 = moderate and 3 = strong staining intensity).
A positive HER2 stain was determined by greater than 2+ membranous staining of tumor cells based on the conventional three-tier grading criteria.
Using the Tabar 5-tier grading scheme (Tabar and Dean, 1983), lesions are assigned to one of five radiologic grades: grade 1, normal; grade 2, benign; grade 3, indeterminate/equivocal, grade 4, suspicious for malignancy and grade 5, radiologically malignant.
Using a three-tier grading system, RCB was found to be a continuous predictor of DFS, with the patients at highest risk having the highest category of RCB [ 15].
Nevertheless, the most recent World Health Organization series on tumours of the digestive system recommends using the two-tier grading system (low versus high grade) in grading colorectal cancer [ 74].
G1 = well differentiated tumor; G2 = moderatly differentiated tumor; G3 = poorly differentiated tumor (the three-tier grading system (G1-3) is usually used at our institution to determine the histologic grade of tumor tissue).
A 5-tier grading scheme is applied (National Breast Cancer Centre, 2002), grade 1, normal; grade 2, benign; grade 3, indeterminate/equivocal, grade 4, suspicious for malignancy and grade 5, radiologically malignant.
MLH1 expression was scored semiquantitatively by multiplying the percentage of cells showing nuclear expression and the intensity of staining using a 3-tier grading system (1=weak, 2=moderate and 3=strong staining).
