Table 1.
Characteristics of cases and controls
| Characteristic | Cases (N=283) N (%) | Controls (N=544) N (%) | OR (95% CI) |
|---|---|---|---|
| Age (y), median (range) | 65 (55 - 74) | 65 (55 - 74) | |
| <60 | 52 (18) | 101 (19) | NA |
| 60-64 | 78 (28) | 148 (27) | NA |
| 65-69 | 97 (34) | 187 (34) | NA |
| ≥70 | 56 (20) | 108 (20) | NA |
| Gender | |||
| Female | 108 (38) | 206 (38) | NA |
| Male | 175 (62) | 338 (62) | NA |
| Race | |||
| White, non-Hispanic | 255 (90) | 491 (90) | NA |
| Black, non-Hispanic | 9 (3) | 18 (3) | NA |
| Hispanic | 4 (1) | 7 (1) | NA |
| Asian | 14 (5) | 26 (5) | NA |
| Pacific Islander | 1 (0) | 2 (0) | NA |
| Education | |||
| High school or less | 84 (30) | 166 (31) | 1 |
| Post-high school and some college | 91 (32) | 175 (32) | 1.00 (0.69-1.45) |
| College graduate | 57 (20) | 85 (16) | 1.31 (0.84-2.05) |
| Post graduate | 51 (18) | 117 (22) | 0.84 (0.54-1.30) |
| Employment status | |||
| Working | 85 (30) | 184 (34) | 1 |
| Retired | 156 (55) | 282 (52) | 1.32 (0.90-1.92) |
| Other (homemaker, disabled, unemployed) | 42 (15) | 76 (14) | 1.26 (0.78-2.06) |
| Marital status | |||
| Married or living as married | 220 (78) | 433 (80) | 1 |
| Not married | 63 (22) | 111 (20) | 1.10 (0.77-1.56) |
| Study center | |||
| University of Minnesota | 75 (27) | 122 (22) | 1 |
| University of Pittsburgh | 42 (15) | 57 (10) | 1.17 (0.67-2.02) |
| Henry Ford Health System | 31 (11) | 62 (11) | 0.73 (0.39-1.38) |
| University of Utah | 27 (10) | 61 (11) | 0.65 (0.37-1.15) |
| Marshfield Clinic Research Foundation | 25 (9) | 70 (13) | 0.53 (0.29-0.97) |
| Washington University in St. Louis | 24 (8) | 50 (9) | 0.72 (0.39-1.32) |
| University of Colorado | 20 (7) | 47 (9) | 0.62 (0.33-1.20) |
| Georgetown University | 15 (5) | 28 (5) | 0.79 (0.38-1.65) |
| Pacific Health Research and Education Institute (Honolulu) | 13 (5) | 25 (5) | 0.58 (0.09-3.73) |
| University of Alabama at Birmingham | 11 (4) | 22 (4) | 0.74 (0.27-2.05) |
| Season of blood draw | |||
| Spring/summer/fall (Mar-Oct) | 202 (71) | 397 (73) | 1 |
| Winter (Nov-Feb) | 81 (29) | 147 (27) | 1.27 (0.71-2.28) |
| Smoking | |||
| Never | 106 (37) | 272 (50) | 1 |
| Former quit ≥ 15 years ago | 73 (26) | 158 (29) | 1.25 (0.86-1.81) |
| Former quit < 15 years ago | 50 (18) | 76 (14) | 1.67 (1.08-2.57) |
| Current | 54 (19) | 38 (7) | 3.88 (2.36-6.37) |
| Body Mass Index (BMI: kg/m2) | |||
| <25 | 96 (34) | 192 (35) | 1 |
| 25-30 | 118 (42) | 248 (46) | 0.96 (0.68-1.35) |
| >=30 | 67 (24) | 102 (19) | 1.34 (0.89-2.01) |
| Median (Range) | 26.6 (18.2 - 46.3) | 26.6 (18.3 - 46.9) | |
| Diabetes | |||
| No | 245 (87) | 496 (91) | 1 |
| Yes | 38 (13) | 46 (8) | 1.74 (1.09-2.8) |
| Family history of pancreatic cancer | |||
| No | 264 (94) | 507 (94) | 1 |
| Yes or possibly | 18 (6) | 34 (6) | 1.06 (0.58-1.91) |
| Months until diagnosis of pancreatic cancer, median (range) | 94.6 (3.6 - 181.5) | NA |
Odds ratios estimated using conditional logistic regression
Columns may not add to total because of missing values
NA – not applicable