Table 2. Sample size for the different selected prognosis periods.

Depending on the surival period, samples are included or excluded in one or more datasets among the four.

Prognosis period T	#Survived > T	#Not survived > T	Total #samples
2 years	1311	76	1387
5 years	976	253	1229
8 years	674	343	1017
11 years	434	398	832