Table 3.
Risk of pancreatic cancer in relation to physical activity in a population-based case-control study of pancreatic cancer in Minnesota, 1994-1998
| Quartile |
P trenda | ||||
|---|---|---|---|---|---|
| Physical activity (hrs/week) | First | Second | Third | Fourth | |
| Light | |||||
| Median | 10 | 20 | 30 | 45 | |
| Cases/controls | 53/122 | 45/184 | 28/132 | 25/115 | |
| OR1 (95% CI)b | 1.00 | 0.60 (0.37, 0.97) | 0.52 (0.30, 0.89) | 0.53 (0.30, 0.93) | 0.026 |
| OR2 (95% CI)c | 1.00 | 0.64 (0.39, 1.03) | 0.55 (0.32, 0.95) | 0.55 (0.30, 0.97) | 0.038 |
| Moderate | |||||
| Median | 3 | 12 | 20 | 31 | |
| Cases/controls | 53/128 | 36/169 | 36/124 | 26/132 | |
| OR1 (95% CI)b | 1.00 | 0.50 (0.30, 0.83) | 0.72 (0.42, 1.23) | 0.50 (0.28, 0.90) | 0.058 |
| OR2 (95% CI)c | 1.00 | 0.51 (0.31, 0.86) | 0.75 (0.43, 1.28) | 0.51 (0.28, 0.93) | 0.073 |
| Heavy | |||||
| Median | 0 | 1 | 3 | 10 | |
| Cases/controls | 57/232 | 16/32 | 45/163 | 33/126 | |
| OR1 (95% CI)b | 1.00 | 2.04 (1.00, 4.06) | 1.22 (0.74, 1.99) | 1.07 (0.60, 1.90) | 0.81 |
| OR2 (95% CI)c | 1.00 | 2.16 (1.05, 4.33) | 1.29 (0.78, 2.13) | 1.18 (0.66, 2.11) | 0.97 |
| Total | |||||
| Median | 18 | 35 | 57 | 77 | |
| Cases/controls | 55/133 | 32/143 | 30/138 | 34/139 | |
| OR1 (95% CI)b | 1.00 | 0.51 (0.30, 0.85) | 0.53 (0.31, 0.90) | 0.60 (0.35, 1.04) | 0.071 |
| OR2 (95% CI)c | 1.00 | 0.54 (0.32, 0.91) | 0.56 (0.32, 0.95) | 0.62 (0.35, 1.09) | 0.09 |
a
Linear trend across quartiles.
b
Adjusted for age, sex, race, education, cigarette smoking, and alcohol intake.
c
Additionally adjusted for intakes of energy, fat, fiber, fruits, and vegetables.