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. 2019 Apr 9;109(5):1393–1401. doi: 10.1093/ajcn/nqy392

TABLE 3.

Associations (HRs, 95% CIs) between quartiles of the Alternative Healthy Eating Index–2010 (AHEI-2010) and risk of breast cancer outcomes in the Sister Study1

Q1 Q2 Q3 Q4 P-trend2
Total invasive breast cancer
 Cases, n 424 416 437 423
 Age-adjusted 1.00 (reference) 0.99 (0.86, 1.13) 0.94 (0.82, 1.08) 0.91 (0.79, 1.04) 0.17
 MV-adjusted3 1.00 (reference) 0.98 (0.86, 1.13) 0.94 (0.82, 1.07) 0.90 (0.78, 1.03) 0.15
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 0.98 (0.86, 1.12) 0.87 (0.76, 1.00) 0.91 (0.79, 1.05) 0.28
ER+ breast cancer
 Cases, n 311 313 326 319
 Age-adjusted 1.00 (reference) 1.00 (0.86, 1.17) 0.95 (0.81, 1.11) 0.92 (0.79, 1.08) 0.35
 MV-adjusted3 1.00 (reference) 0.99 (0.84, 1.16) 0.93 (0.80, 1.09) 0.90 (0.76, 1.06) 0.23
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 0.98 (0.84, 1.15) 0.90 (0.77, 1.06) 0.93 (0.79, 1.09) 0.58
ER– breast cancer
 Cases, n 59 50 60 48
 Age-adjusted 1.00 (reference) 0.86 (0.59, 1.25) 0.94 (0.66, 1.35) 0.75 (0.51, 1.10) 0.18
 MV-adjusted3 1.00 (reference) 0.88 (0.60, 1.29) 0.96 (0.67, 1.39) 0.77 (0.52, 1.14) 0.25
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 0.93 (0.65, 1.32) 0.72 (0.49, 1.06) 0.69 (0.47, 1.03) 0.06
ER+/PR+ breast cancer
 Cases, n 276 264 260 261
 Age-adjusted 1.00 (reference) 0.96 (0.81, 1.14) 0.86 (0.73, 1.02) 0.86 (0.73, 1.02) 0.11
 MV-adjusted3 1.00 (reference) 0.94 (0.80, 1.12) 0.85 (0.71, 1.01) 0.85 (0.71, 1.01) 0.09
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 0.91 (0.77, 1.08) 0.86 (0.73, 1.03) 0.89 (0.74, 1.06) 0.31
ER–/PR– breast cancer
 Cases, n 54 48 56 41
 Age-adjusted 1.00 (reference) 0.90 (0.61, 1.33) 0.96 (0.66, 1.40) 0.70 (0.46, 1.05) 0.16
 MV-adjusted3 1.00 (reference) 0.93 (0.63, 1.37) 0.99 (0.68, 1.45) 0.72 (0.47, 1.10) 0.24
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 0.97 (0.67, 1.40) 0.75 (0.51, 1.12) 0.64 (0.42, 0.98) 0.04
ER–/PR–/HER2– breast cancer
 Cases, n 38 38 37 27
 Age-adjusted 1.00 (reference) 1.02 (0.65, 1.60) 0.91 (0.58, 1.44) 0.66 (0.40, 1.09) 0.06
 MV-adjusted3 1.00 (reference) 1.04 (0.66, 1.64) 0.93 (0.58, 1.47) 0.68 (0.41, 1.13) 0.08
 MV-adjusted excluding alcohol3, 4 1.00 (reference) 1.21 (0.79, 1.85) 0.73 (0.45, 1.19) 0.65 (0.38, 1.09) 0.02
1

Values are HRs (95% CIs) unless otherwise indicated. ER, estrogen receptor; HER2, human epidermal growth factor receptor-2; MET, metabolic equivalent of task; MV, multivariable; PR, progesterone receptor.

2

P value for the continuous AHEI-2010 score (Wald test).

3

Adjusted for total energy intake (kcal/d, continuous), race/ethnicity (white [reference], black, other), income (<$50,000 [reference], $50,000 to <$100,000, ≥$100,000/y), smoking (0, >0 to <10, 10 to <20, 20 to <30, ≥30 pack-years), BMI (<18.5, 18.5 to <25 [reference], 25 to <30, 30 to <35, ≥35), physical activity (MET-h/wk, continuous), height (inches, continuous), education (high school or less [reference], some college, college graduate or more), mother diagnosed with breast cancer (yes vs. no [reference]), age at first live birth (nulliparous [reference], <21, 21 to <25, 25 to <29, 29–32, >32 y), parity (0 or 1 [reference], 2 or 3, 4 or more), hormone replacement therapy (none [reference], estrogen only, estrogen and progesterone, both estrogen and progesterone), age at menopause (premenopausal [reference], <40, 40 to <50, 50 to <55, ≥55 y), oral contraception use (yes [reference] vs. no), age at menarche (<12 [reference], 12 to <12.5, 12.5 to <13.5, 13.5 to <14.5, ≥14.5 y), lifetime duration of breastfeeding (0 [reference], >0 to <50, 50 to <100, ≥100 wk), and time of last mammogram (<1 [reference], 1 to <2, ≥2 y ago).

4

Additionally adjusted for alcohol intake (none [reference], <0.5, ≥0.5 to 1, ≥1 to 2, ≥2 drinks/d).