Table A2.

Chemotherapy Treatment Decision by Age Group and Recurrence Score

Recurrence Score and Age Group	Total No.	With Chemotherapy
		No.	%	95% CI (%)
Low risk
All	983	56	6	4 to 7
≤ 45	123	11	9	5 to 15
46-55	318	27	8	6 to 12
56-65	321	16	5	3 to 8
66-75	190	2	1	0 to 4
≥ 76	31	—		—
Intermediate risk
All	668	281	42	38 to 46
≤ 45	92	61	66	56 to 76
46-55	210	95	45	38 to 52
56-65	217	83	38	32 to 45
66-75	129	38	29	22 to 38
≥ 76	20	4	20	6 to 44
High risk
All	171	143	84	77 to 89
≤ 45	23	21	91	72 to 99
46-55	41	35	85	71 to 94
56-65	63	52	83	71 to 91
66-75	36	31	86	71 to 95
≥ 76	8	4	50	16 to 84
No test
All	4,407	794	18	17 to 19
≤ 45	422	193	46	41 to 51
46-55	922	286	31	28 to 34
56-65	1,157	197	17	15 to 19
66-75	1,047	104	10	8 to 12
≥ 76	859	14	2	1 to 3