Exact(7)
The PVN classification showed significantly short crude disease-free and overall survival periods in the risk order of the classification (P<0.001, Figure 1A E).
Crude disease-free and overall survival periods of the PVN classification were significantly shortened in the risk order of the classification (P<0.001, Figure 1E H).
The rates of tumour recurrence or death of IDC patients increased in the score order of the classification, and all cases belonging to the very high-risk group showed tumour recurrence and death by 5 years after the initial operation.
The current study clearly demonstrated that the PVN classification is the only prognostic classification that can classify IDC patients into the four groups according to in the risk order of the classification with significant rates of tumour recurrence or death.
In IDCs without nodal metastasis, the largest numbers of patients were observed in the low-risk group, and the number of patients belonging to each group decreased in the risk order of the classification (Table 1).
In IDCs with nodal metastasis, the rates of tumour recurrence or death increased in the risk order of the classification, and the tumour recurrence of the low-risk group was observed only in one case, and no case died of the disease (Table 2).
Similar(53)
Although the rates of tumour recurrence or death in the NPI, modified NPI, or HG classifications increased according to the risk order of the classifications, the tumour recurrence and death rates in the high-risk groups of them were lower than those in the very high-risk group of the PVN classification.
Although the rates of tumour recurrence or death in the NPI, modified NPI, and HG classifications increased according to the risk order of the classifications, the tumour recurrence and death rates in the high-risk groups were lower than those in the very high-risk group of the PVN classification.
The frequencies of tumour recurrence or death in the high-risk groups of the other prognostic classification systems were very low, and the NPI, modified NPI, and HG classifications could not narrow the number of cases belonging to each risk group in the risk orders of the classification systems.
In addition, the NPI, modified NPI, and HG classifications could not narrow the number of cases belonging to each risk group in the risk orders of the classifications.
Spain's Alberto Contador retained the overall lead as a crash in the final kilometre meant no changes to the order of the general classification.
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