Population-based study of breast cancer in older women: prognostic factors of relative survival and predictors of treatment

Table 3 Treatment description by age

Age	75-79 (N=310)		80-84 (N=208)		≥85 (N=163)		p value*	All cases (N=681)
Treatments	310	%	208	%	163	%	p value*	681	%
No treatment							0.006
Yes	4	1.3	6	2.9	9	5.5		19	2.8
No	304	98.1	197	94.7	145	89.0		646	94.9
Unknown	2	0.6	5	2.4	9	5.5		16	2.3
Surgery alone							0.02
Yes	19	6.1	13	6.3	20	12.3		52	7.6
No	272	87.7	184	88.5	126	77.3		582	85.5
Unknown	19	6.1	11	5.3	17	10.4		634	93.1
Hormone therapy							<0.001
Yes	12	3.9	18	8.7	44	27.0		74	10.9
No	277	89.4	176	84.6	93	57.1		546	80.2
Unknown	21	6.8	14	6.7	26	16.0		61	9.0
Breast conserving surgery plus adjuvant therapy							<0.001
Yes	144	46.5	69	33.2	25	15.3		238	34.9
No	157	50.6	135	64.9	132	81.0		424	62.3
Unknown	9	2.9	4	1.9	6	3.7		19	2.8
Mastectomy plus adjuvant therapy							0.40
Yes	92	29.7	83	39.9	36	22.1		211	31.0
No	208	67.1	116	55.8	116	71.2		440	64.6
Unknown	10	3.2	9	4.3	11	6.7		30	4.4
Others†							0.03
Yes	18	5.8	5	2.4	3	1.8		26	3.8
No	271	87.4	189	90.9	134	82.2		594	87.2
Unknown	21	6.8	14	6.7	26	16.0		61	9.0

Abbreviations: N = number of patients.
*Cochran-Armitage trend test.
†Others: chemotherapy alone, radiotherapy alone, chemotherapy plus hormone therapy, chemotherapy plus radiotherapy, radiotherapy plus hormone therapy, chemotherapy plus radiotherapy plus hormone therapy, neoadjuvant chemotherapy plus surgery plus adjuvant therapy, neoadjuvant chemotherapy plus surgery.

ISSN: 1471-2407