Stratifying variable | N cases in strata, hazard ratios (95% confidence intervals)a | Test of interactionb | |||
---|---|---|---|---|---|
Age at recruitment |  | < 50 years |  | ≥ 50 years |  |
 Meat eaters | 690 | Reference | 1778 | Reference |  |
 Fish eaters | 204 | 0.86 (0.73, 1.01) | 260 | 0.99 (0.87, 1.14) |  |
 Vegetarians | 459 | 1.00 (0.88, 1.13) | 403 | 1.14 (1.01, 1.27) | χ2 = 23.07 |
 Vegans | 80 | 1.31 (1.03, 1.67) | 67 | 1.50 (1.17, 1.93) | p < 0.001 |
 p-heterogeneityc |  | 0.016 |  | 0.003 |  |
Sex | Â | Men | Â | Women | Â |
 Meat eaters | 440 | Reference | 2028 | Reference |  |
 Fish eaters | 76 | 0.94 (0.73, 1.21) | 388 | 0.95 (0.85, 1.06) |  |
 Vegetarians | 202 | 1.06 (0.88, 1.28) | 660 | 1.09 (0.99, 1.20) | χ2 = 6.39 |
 Vegans | 47 | 1.18 (0.85, 1.62) | 100 | 1.53 (1.24, 1.88) | p = 0.09 |
 p-heterogeneityc |  | 0.64 |  | < 0.001 |  |
Menopausal statusd | Â | Premenopausal | Â | Postmenopausal | Â |
 Meat eaters | 167 | Reference | 1500 | Reference |  |
 Fish eaters | 54 | 0.64 (0.47, 0.87) | 231 | 1.01 (0.88, 1.17) |  |
 Vegetarians | 161 | 0.91 (0.73, 1.15) | 325 | 1.13 (0.99, 1.28) | χ2 = 3.74 |
 Vegans | 27 | 1.41 (0.93, 2.15) | 52 | 1.62 (1.22, 2.16) | p = 0.44 |
 p-heterogeneityc |  | 0.004 |  | 0.004 |  |
Physical activity | Â | Inactive/low | Â | Moderate/high | Â |
 Meat eaters | 1437 | Reference | 561 | Reference |  |
 Fish eaters | 253 | 0.94 (0.82, 1.08) | 144 | 0.96 (0.79, 1.16) |  |
 Vegetarians | 495 | 1.09 (0.98, 1.22) | 257 | 1.03 (0.88, 1.22) | χ2 = 0.69 |
 Vegans | 79 | 1.43 (1.13, 1.80) | 50 | 1.34 (0.98, 1.82) | p = 0.88 |
 p-heterogeneityc |  | 0.006 |  | 0.25 |  |
Body mass index |  | < 22.5 kg/m2 |  | ≥ 22.5 kg/m2 |  |
 Meat eaters | 762 | Reference | 1593 | Reference |  |
 Fish eaters | 210 | 0.95 (0.81, 1.11) | 237 | 0.97 (0.84, 1.11) |  |
 Vegetarians | 428 | 1.17 (1.02, 1.33) | 396 | 1.04 (0.92, 1.17) | χ2 = 4.71 |
 Vegans | 95 | 1.66 (1.32, 2.08) | 43 | 1.10 (0.80, 1.49) | p = 0.19 |
 p-heterogeneityc |  | < 0.001 |  | 0.76 |  |