For continuous HLI change, associations did not reach statistical significance, but the effect differed significantly by ER status: HR = 0.979 (95% CI 0.953–1.006) for the ER-positive breast cancer and HR = 1.062 (95% CI 0.998–1.130) for the ER-negative breast cancer (P for heterogeneity = 0.018).
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Lifestyle changes and postmenopausal breast cancer risk in women from the European Prospective Investigation into Cancer and Nutrition.
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