Table 5.

The 5-year PFS in the WHO thymic histotypes.

Progression-Free Survival at 5 years
WHO histotypes
	A	AB	B1	B2	B3	C	P value**
CLAS1	77.5%	87.7%	66.8%	70%	59.8%	34.3%	0.001
CLAS2	77.5%	89.1%	74.6%	63.2%	61.2%	40.9%	0.065
CLAS3	72.7%	88.4%	60.3%	73.4%	67.3%	45.8%	0.066
CLAS4	84.8%	89.1%	100%	61.4%	60.2%	26.7%	<0.001
P value*	0.643	0.893	0.565	0.874	0.756	0.225

^*p value for the single WHO histotype;

^**p value for every single pathologist.

CLAS: pathologist