Table 1.

Estimates of Median Survival in Months and 1-Year and 5-Year Survival by Demographic and Clinical Characteristics Among Population-based Pancreatic Cancer Patients, San Francisco Bay Area, California, 1995–1999

Characteristics	No.	%	Survival, months		1-Year Survival, %	5-Year Survival, %	P Valuea
			Median	95% CI
Total	1,954		3.8	3.5, 4.1	15.1	1.3
Age at diagnosis, years
<50	102	5	5.2	4.3, 7.0	23.0	6.6	<0.0001
50–59	305	16	5.5	4.8, 6.0	20.7	2.0
60–69	511	26	4.6	4.2, 5.4	17.6	1.4
70–79	694	36	3.0	2.7, 3.6	14.5	0.9
≥80	342	17	2.3	1.9, 2.7	5.3	0
Sex
Men	960	49	3.9	3.5, 4.2	14.6	1.3	0.32
Women	994	51	3.8	3.4, 4.3	15.7	1.3
Race/ethnicity
Non-Hispanic white	1,270	65	4.0	3.7, 4.4	15.3	1.6	<0.0001
Hispanic white	113	6	3.3	2.4, 4.6	16.8	1.8
Black/African American	198	10	3.8	3.0, 5.0	12.6	0.5
Asian/Pacific Islander/other	233	12	4.8	4.2, 5.8	18.3	0.9
Unknown	140	7	2.0	1.5, 2.6	10.3	0
Stage at diagnosis
Local	130	7	7.7	6.3, 8.8	33.7	8.6	<0.0001
Regional	524	27	7.4	6.7, 8.2	28.9	2.3
Distant	916	47	2.7	2.4, 2.9	6.2	0.1
Unstaged/unknown	384	20	3.0	2.6, 3.6	11.3	0.3
Tumor grade
Well differentiated	111	6	9.0	6.3, 10.1	33.1	5.5	<0.0001
Moderately well differentiated	53	3	7.6	5.4, 10.5	28.9	4.2
Moderately differentiated	229	12	6.0	4.7, 7.1	28.0	3.6
Moderately/poorly differentiated	73	4	5.2	4.6, 6.0	24.7	6.8
Poorly differentiated	288	15	3.7	3.1, 4.2	12.0	0.4
Not graded/unknown	1,200	60	3.0	2.8, 3.3	10.6	0.3
Tumor location
Head	1,042	53	4.9	4.5, 5.4	19.7	2.2	<0.0001
Body	164	8	3.9	3.0, 4.9	9.2	0
Tail	169	9	3.0	2.3, 3.5	11.8	0
Head, body, tail	134	7	3.9	2.8, 5.0	7.5	0
Not specified/unknown	445	23	2.4	2.0, 2.7	10.2	0.7
Primary treatment
Surgical resection	223	11	12.7	10.4, 15.0	50.8	10.8	<0.0001
Chemotherapy/radiation	410	21	5.8	5.2, 6.3	16.6	0
Other treatmentb	112	6	4.8	3.5, 5.7	18.2	0.9
Bypass/stent	235	12	4.2	3.5, 5.1	12.3	0
No treatment	147	8	0.5	0.4, 0.6	0	0
Treatment unknown	827	42	2.6	2.3, 2.8	8.0	0.1

Abbreviation: CI, confidence interval.

^aLog-rank test P value for H₀: no difference in the probability of death among categories.

^bPrimarily cholecystectomy, biliary drainage, ostomy, and other palliative procedures.