Table 4.
Hazard ratios and 95% confidence intervals for breast cancer in two models* according to fifths of intake of vegetables during adolescence among women in Nurses’ Health Study II
| Fifth of intake | Ptrend | Per serving/day | |||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | |||
| All cases | |||||||
| Median intake (serving/day) | 1.2 | 1.8 | 2.4 | 3.2 | 4.5 | — | — |
| No of cases/person years | 310/134 501 | 255/134 513 | 248/134 563 | 264/134 493 | 270/134 419 | — | — |
| Model 1 | 1 | 0.83 (0.70 to 0.98) | 0.81 (0.68 to 0.95) | 0.85 (0.72 to 1.00) | 0.86 (0.73 to 1.01) | 0.20 | 0.97 (0.93 to 1.02) |
| Model 2 | 1 | 0.82 (0.69 to 0.97) | 0.79 (0.66 to 0.93) | 0.83 (0.70 to 0.98) | 0.85 (0.71 to 1.01) | 0.21 | 0.97 (0.92 to 1.02) |
| Premenopausal cases | |||||||
| Median intake (serving/day) | 1.2 | 1.8 | 2.4 | 3.2 | 4.5 | — | — |
| No of cases/person years | 138/69 460 | 110/69 410 | 111/69 487 | 99/69 487 | 118/69 544 | — | — |
| Model 1 | 1 | 0.78 (0.61 to 1.01) | 0.80 (0.62 to 1.03) | 0.69 (0.53 to 0.90) | 0.82 (0.64 to 1.05) | 0.14 | 0.95 (0.88 to 1.02) |
| Model 2 | 1 | 0.80 (0.62 to 1.04) | 0.81 (0.62 to 1.05) | 0.71 (0.54 to 0.94) | 0.84 (0.64 to 1.10) | 0.25 | 0.95 (0.88 to 1.03) |
| Postmenopausal cases | |||||||
| Median intake (serving/day) | 1.2 | 1.9 | 2.5 | 3.2 | 4.6 | — | — |
| No of cases/person years | 147/53 314 | 122/53 335 | 116/53 319 | 137/53 289 | 118/53 225 | — | — |
| Model 1 | 1 | 0.83 (0.65 to 1.06) | 0.78 (0.61 to 1.00) | 0.93 (0.73 to 1.17) | 0.80 (0.62 to 1.02) | 0.21 | 0.96 (0.90 to 1.03) |
| Model 2 | 1 | 0.79 (0.62 to 1.02) | 0.73 (0.57 to 0.94) | 0.87 (0.68 to 1.11) | 0.75 (0.57 to 0.98) | 0.13 | 0.94 (0.88 to 1.02) |
*See table 3.