Table 2.

Patient and clinical characteristics among Medicare enrolled-patients diagnosed with pancreatic cancer who received curative surgery with or without adjuvant therapy. (N=1,383)

	Surgery only (n=709)		Surgery and radiation only (n=126)		Surgery and chemotherapy only (n=126)		Surgery and chemoradiation (n=422)		P
	N	%	N	%	N	%	N	%
Diagnosis year (%)
1992–1995	254	56	48	11	40	9	115	25	0.073
1996–1999	245	51	42	3	43	9	155	32
2000–2002	210	48	36	8	43	10	152	34
Age
<75 years	353	44	85	10	81	10	292	36	<0.001
≥75 years	356	62	41	7	45	8	130	23
Gender
Men	335	50	50	7	71	11	216	32	0.034
Women	374	53	76	11	55	7	206	29
Race
White	585	50	102	9	111	10	371	32	0.157
Black	60	58	13	13	7	7	23	22
Hispanic	5	33	*	*	*	*	6	40
Other	59	61	9	9	6	6	22	23
Stage of disease
I	121	62	14	7	13	7	48	25	0.004
II	359	46	72	9	68	9	277	36
III	26	52	*	*	5	10	15	30
Unknown	203	56	23	10	40	11	82	23
Co-morbidity score
0	426	50	85	10	86	10	256	30	0.427
1	189	52	29	8	26	21	117	32
≥2	94	56	12	7	14	11	49	29
SEER registry
San Francisco	52	63	8	10	11	13	12	14	<0.001
Connecticut	97	45	11	5	19	9	89	41
Detroit	128	44	34	12	31	11	99	34
Hawaii	29	52	*	*	*	*	21	38
Iowa	99	57	17	10	7	4	51	29
New Mexico	29	63	*	*	5	11	9	20
Seattle	56	53	8	8	11	10	31	29
Utah	51	71	*	*	5	7	14	19
Atlanta	35	44	9	11	6	8	30	38
San Jose	28	40	17	24	5	7	20	29
Los Angeles	105	56	14	7	23	12	46	24
Income
Quartile 1	197	59	32	10	26	8	76	23	0.001
Quartile 2	184	56	26	8	24	7	95	29
Quartile 3	160	48	29	9	32	10	113	34
Quartile 4	137	41	35	10	41	12	119	36
Unknown	31	54	*	*	*	*	19	33

^*Indicates cell size of n<5