Table 1. Characteristics of study subjects.
| Healthy control(N = 61) | Chronic pancreatitis(N = 62) | Acute benign biliary obstruction(N = 31) | Pancreatic cancer (N = 98) | Total (N = 252) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | N | % | N | % | |
| Centers | ||||||||||
| ENH | 0 | (0%) | 0 | (0%) | 0 | (0%) | 15 | (15%) | 15 | (6%) |
| MSKCC | 9 | (15%) | 0 | (0%) | 0 | (0%) | 24 | (25%) | 33 | (13%) |
| Pitt | 26 | (43%) | 36 | (58%) | 14 | (45%) | 26 | (27%) | 102 | (40%) |
| UMHS | 12 | (20%) | 22 | (35%) | 16 | (52%) | 19 | (19%) | 69 | (27%) |
| UNMC | 14 | (23%) | 4 | (6%) | 1 | (3%) | 14 | (14%) | 33 | (14%) |
| Ages | ||||||||||
| <50 | 1 | (2%) | 7 | (11%) | 3 | (10%) | 1 | (1%) | 12 | (5%) |
| 50~59 | 19 | (31%) | 24 | (39%) | 6 | (19%) | 13 | (13%) | 62 | (25%) |
| 60~69 | 25 | (41%) | 17 | (27%) | 10 | (32%) | 35 | (36%) | 87 | (35%) |
| 70~79 | 10 | (16%) | 12 | (19%) | 7 | (23%) | 29 | (39%) | 58 | (23%) |
| >80 | 6 | (10%) | 2 | (3%) | 5 | (16%) | 20 | (21%) | 33 | (13%) |
| Gender | ||||||||||
| Male | 25 | (41%) | 36 | (56%) | 12 | (39%) | 43 | (44%) | 116 | (46%) |
| Female | 36 | (59%) | 26 | (44%) | 19 | (61%) | 55 | (56%) | 136 | (54%) |
| Race | ||||||||||
| White | 55 | (90%) | 57 | (92%) | 29 | (94%) | 89 | (92%) | 230 | (91%) |
| Asian | 0 | (0%) | 0 | (0%) | 0 | (0%) | 3 | (3%) | 3 | (1%) |
| African-American | 6 | (10%) | 4 | (6%) | 2 | (6%) | 1 | (1%) | 13 | (5%) |
| Native and others | 0 | (0%) | 1 | (2%) | 0 | (0%) | 5 | (4%) | 6 | (2%) |
| Tumor Stages | ||||||||||
| IA | 7 | (7%) | ||||||||
| IB | 8 | (8%) | ||||||||
| II | 1 | (1%) | ||||||||
| IIA | 40 | (41%) | ||||||||
| IIB | 42 | (43%) | ||||||||
ENH, Evanston Northwestern Healthcare; MSKCC, Memorial Sloan Kettering Cancer Center; Pitt, University of Pittsburgh Medical Center; UMHS, University of Michigan Health Services; UNMC, University of Nebraska Medical Center.