Table A2.
Summary of cohort study data used for meta-analysis calculation.
| HR (95% CI) | |||||||
|---|---|---|---|---|---|---|---|
| Study Reference, Cohort | Diet Quality Index | Q1 | Q2 | Q3 | Q4 | Q5 | 10-Unit Increase |
| Kim, 2011 | AHEI | ||||||
| NHS | - | ||||||
| Overall mortality | 1.00 | 0.82 (0.61–1.10) | 0.83 (0.62–1.12) | 0.98 (0.73–1.32) | 0.85 (0.63–1.17) | - | |
| BC-specific mortality | 1.00 | 1.06 (0.68–1.66) | 1.12 (0.72–1.74) | 1.28 (0.83–1.98) | 1.53 (0.98–2.39) | - | |
| George, 2011 | HEI-2005 | ||||||
| HEAL | Mean | 50.10 | 62.90 | 70.80 | 79.00 | - | |
| Overall mortality | 1.00 | 0.39 (0.18–0.85) | 0.85 (0.43–1.71) | 0.40 (0.17–0.94) | - | 0.80 (0.60–1.05) | |
| BC-specific mortality | 1.00 | 0.65 (0.23–1.86) | 0.70 (0.24–2.06) | 0.12 (0.02–0.99) | - | 0.53 (0.28–0.99) | |
| George 2014 | HEI-2005 | ||||||
| WHI | Range (Midpoint) | 34–63 (48.5) | 63–71 (67) | 71–77 (74) | 77–91 (84) | - | |
| Overall mortality | 1.00 | 0.93 (0.71–1.22) | 0.86 (0.65–1.14) | 0.74 (0.55–0.99) | - | 0.92 (0.85–1.01) | |
| BC-specific mortality | 1.00 | 0.99 (0.66–1.50) | 0.93 (0.61–1.43) | 0.91 (0.60–1.40) | - | 0.97 (0.86–1.10) | |
| Wang 2020 | HEI-2015 | ||||||
| SBCSS | Range (Midpoint) | 38.0–58.7 (48.35) | 58.7–61.9 (60.3) | 61.9–65.8 (63.85) | 65.8–78.5 (72.15) | - | |
| Overall mortality | 1.00 | 1.08 (0.82–1.42) | 1.01 (0.76–1.36) | 0.79 (0.57–1.10) | - | 0.91 (0.79–1.05) | |
| BC-specific mortality | 1.00 | 1.10 (0.79–1.53) | 0.91 (0.63–1.31) | 0.86 (0.58–1.27) | - | 0.93 (0.79–1.11) | |
NHS, Nurses’ Health Study; HEAL, Health, Eating, Activity, and Lifestyle Study; WHI, Women’s Health Initiative; SBCSS, Shanghai Breast Cancer Survival Study; AHEI, Alternative Healthy Eating Index; HEI, healthy eating index; BC, breast cancer; HR, hazard ratio; CI, confidence interval; Q1, first quartile or quintile; Q2, second quartile or quintile; Q3, third quartile or quintile; Q4, fourth quartile or quintile; Q5, fifth quintile.