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. 2016 May 11;353:i2343. doi: 10.1136/bmj.i2343

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.