Table 1.
Distribution of selected variables among patients and controls
| Variable | Patients (N = 626) n (%) | Controls (N = 530) n (%) | P value (χ2) |
|---|---|---|---|
| Age at recruitment (y) | 0.35 | ||
| ≤50 | 82 (13.1) | 74 (14.0) | |
| 51-60 | 176 (28.1) | 169 (31.9) | |
| 61-70 | 242 (38.7) | 180 (34.0) | |
| >70 | 126 (20.1) | 107 (20.2) | |
| Gender | 0.03 | ||
| Female | 282 (45.0) | 205 (38.7) | |
| Male | 344 (55.0) | 325 (61.3) | |
| Race | <0.01 | ||
| Non-Hispanic white | 542 (86.6) | 492 (92.8) | |
| Hispanic | 33 (5.3) | 21 (4.0) | |
| African American | 43 (6.9) | 15 (2.8) | |
| Others | 8 (1.3) | 2 (0.4) | |
| Education* | <0.01 | ||
| <High school | 60 (9.7) | 13 (2.5) | |
| High school | 159 (25.7) | 119 (22.5) | |
| College | 301 (48.7) | 306 (57.7) | |
| Graduate degree | 98 (15.9) | 92 (17.4) | |
| Family history of cancer† | <0.01 | ||
| No | 218 (35.1) | 235 (44.4) | |
| Yes | 403 (64.9) | 293 (55.4) | |
| History of pancreatitis | <0.01 | ||
| No | 573 (91.5) | 524 (98.9) | |
| Yes | 53 (8.5) | 6 (1.1) | |
| History of diabetes | <0.01 | ||
| No | 480 (76.7) | 474 (89.4) | |
| Yes | 146 (23.3) | 56 (10.6) | |
| Smoking status | <0.01 | ||
| Never | 259 (41.4) | 269 (50.8) | |
| Ever | 367 (58.6) | 261 (49.2) | |
| Alcohol consumption | 0.05 | ||
| Never | 268 (42.8) | 248 (47.0) | |
| ≤60 g/day | 307 (49.0) | 255 (48.3) | |
| >60 g/day | 51 (8.1) | 25 (4.7) |
*
Information on education was missing from eight cases.
†
Information is missing from five cases and two controls because of adopted family.