This assumption follows the Cochrane recommendations for literature search, inclusion criteria, assessments of risk and bias, data extraction, data analysis, and grading of evidence [ 2, 4].
Indeed, 25 50% of cases of prostate cancer need to be either upgraded or downgraded from their initial biopsy score to a more accurate surgical GS after analysis and grading of prostatectomy tissue (Kvale et al, 2009; Davies et al, 2011; Epstein et al, 2012).
In multivariate models, age, gender and factors that showed significant association in univariate analysis (pN and grade of differentiation) were included.
The aortic-to-blood pool uptake ratio is a promising semiquantitative method of analysis for the detection and grading of arterial inflammation.
In multivariate analysis, histopathological stage and grade of differentiation as well as the RCAS1 expression were identified as independent prognostic factors (Cox regression analysis, P = 0.0204, P = 0.0035, and P = 0.0081).
Coexpression of K-ras mutations and HLA-DR was found significantly more frequently in large and highly dysplastic adenomas, although two-way analysis of variance showing size and grade of dysplasia to be the most important variable.
In a multivariate analysis of DNA content, site and grade of dysplasia as predictors of time to progression, abnormal DNA content was a significant predictor with a hazard ratio of 3.395%5% CI: 1.5 7.4).
Survival analysis including the parameters stage and grade of disease, p73 and p53, and also apoptosis, showed that tumour stage and grade as well as p53 and p73 were significantly related to prognosis.
In 996 patients with SCCa, age, tumour size, depth of cervical stromal invasion, parametrial involvement, LVSI, lymph node metastasis and type of adjuvant treatment were significantly associated with both RFS and OS, but FIGO stage was significantly associated with only RFS in univariate analysis, whereas resection margin status and grade of differentiation were unrelated (Table 5).
The variables considered for this analysis were: grading of tumours, tumour size, lymph node involvement, tumour staging (following AJCC guidelines) and oestrogen and progesterone receptor levels.
Hence, a detailed analysis of the grading of RCTs was suggested [ 59].
