Table 2.

Patient characteristics

Parameter	Number	Percent
Male gender	155	58
Female gender	114	42
Adenocarcinoma	192	71
Non-adenocarcinoma	77	29
Extracranial metastases	176	65
No extracranial metastases	93	35
Single brain metastasis	54	20
2–4 brain metastases	86	32
>4 brain metastases	129	48
EGFR or ALK positive	19	7
Age <70 years	200	74
Age ≥70 years	69	26
KPS <70	52	19
KPS 70	70	26
KPS 80	50	19
KPS 90–100	97	36
Upfront whole brain radiotherapya	193	72
Upfront neurosurgery	57	21
Upfront radiosurgery	16	6
Upfront stereotactic fractionated radiotherapy	3	1
Supportive care alone	0	0

KPS Karnofsky performance status

^aincludes patients with delayed (salvage) neurosurgery, radiosurgery, fractionated re-irradiation