Table 2.

Cancer Stage at Diagnosis by SSDI Entitlement to Medicare among Persons Diagnosed with Cancer Age 24–64 Years

	With SSDI/Medicare* (%)	Without SSDI/Medicare (%)
Lung	n = 4,626	n = 47,337
I	22.0	17.8
II	4.6	4.7
IIIA	11.3	10.4
IIIB	17.4	17.0
IV	34.6	42.1
Unstaged	10.2	8.0
Colorectal	n = 2,723	n = 49,369
In situ	8.6	8.9
I	23.8	22.2
II	21.9	22.7
III	21.7	23.6
IV	20.2	18.8
Unstaged	3.9	3.8
Breast	n = 3,911	n = 138,370
In situ	14.1	16.4
I	36.3	34.3
IIA	21.5	21.6
IIB	11.2	11.9
II NOS	0.8	1.2
IIIA	3.7	3.5
IIIB	3.6	2.4
IV	4.0	3.4
Unstaged	4.9	5.3
Prostate	n = 3,811	n = 57,448
In situ	3.7	2.1
I	21.4	18.7
II	11.9	12.9
III	15.0	20.5
IV	10.5	10.3
Unstaged	37.5	35.5

Total number of cases is: lung (n = 51,963), colorectal (n = 52,092), breast (n = 142,281), and prostate (n = 61,259).

^*Cases on Medicare at time of cancer diagnosis and who qualified for Medicare via SSDI.

SSDI, Social Security Disability Insurance.