Table 2.

Study 1 exclusion parameters

Exclusion criteria	Count (out of 319)	Percentage (out of 319)	Notes	Could exclude PBT
Not reported	67	21	Issue of poor reporting and heterogeneity of sample	X
Cognitive impairment	47	15	Often not defined	X
Metastatic disease	52	16	Any metastases
Brain metastases	5	2	Explicit exclusion of brain metastases
CNS disease/primary brain tumor	4	1	Explicit exclusion of PBTs	X
Off treatment	81	25	Not currently being treated	X
Curative treatment	13	4	Intent of treatment is to cure	X
No recurrent or terminal disease	63	20	Often poorly defined	X
Other	46	14	For example, ongoing or synchronous disease	X
Not explicitly stated	74	23	Inclusion criteria specified, but nothing specific to the categories above	X

Categories are not exclusive of one another. Studies could be coded for several exclusion criteria. The number 319 includes the total number of studies that were included in the review