Table 2.

Survival by RPA-derived subgroups for MSKCC + CCF data set, and French data set split according to RPA subgroups.

Site	Subgroup	N	Median survival (mos)	95% CI
MSKCC + CCF	I – GTR/PR; Age <75.5 yrs	161	9.3	8.4 – 11.2
	II – GTR/PR; Age ≥75.5 yrs	122	6.4	5.8 – 7.6
	III – Biopsy; KPS 70–100	83	4.6	3.7 – 5.3
	IV – Biopsy; KPS <70	70	2.3	2.1 – 3.1
French	I – GTR/PR; Age <75.5 yrs	68	8.5	7.1 – 10.5
	II – GTR/PR; Age ≥75.5 yrs	27	7.7	4.3 – 15.1
	III – Biopsy; KPS 70–100	68	4.3	3.2 – 6.3
	IV – Biopsy; KPS <70	32	3.1	1.4 – 4.6

MSKCC=Memorial Sloan-Kettering Cancer Center; CCF=Cleveland Clinic Foundation; KPS=Karnofsky performance status; PR=partial resection; GTR=gross total resection; CI=confidence interval; N=number of patients in subgroup