Second, there should be discrimination between stage groups; patients in different stage groups should have larger differences in survival.
Small differences in survival estimates between stage groups are more likely to be statistically significant in a large data set.
Overall, in the AJCC 6th edition, two out of six consecutive steps between stage groups were not significantly discriminant, while in the AJCC 7th edition, three out of seven consecutive steps were not significantly discriminant, indicating that the discriminant value between stage groups has decreased between the 6th and 7th edition staging system.
(2) Index the second-stage groups in each first-stage group from 0 to.
The T and N stages, stage groups and prognostic groups of the patients are shown in Table 1, and the proportion of patients who migrated between stages when TNM7 was applied are summarised in Table 2.
Standard staging criteria are beneficial for discriminating between patients, but within each stage group there is variability in outcome and in biological profiles of tumors.
The sample was divided into two groups according to the date of birth of neonates and hearing screening procedures: Group I (GI): neonates born between March 2011 and March 2012 who underwent NHS in one stage; Group II (GII): neonates born between April 2012 and March 2013, who underwent two-stage NHS (test and retest).
Combined marker analyses, based on the number of favorable markers, showed statistically significant discrimination between patient groups in early-stage (TNM stage I and II) colon cancer (n = 121).
Furthermore, we studied differences in survival between the age groups in stage I-IIb while adjusting for the potential determinants by modeling the excess mortality (RER) using Poisson regression.
This study revealed only differences in nodal status, but no differences between the groups in T stage.
