Does Season of Reported Dietary Intake Influence Diet Quality? Analysis From the Women's Health Initiative
Does Season of Reported Dietary Intake Influence Diet Quality? Analysis From the Women's Health Initiative
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DOI：
10.1093/aje/kwz087
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发表时间：
2019-07-01
影响因子：
5
通讯作者：
Thomson, Cynthia A.
中科院分区：
文献类型：
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作者：
Crane, Tracy E.;Latif, Yasmin Abdel;Thomson, Cynthia A.
我们评估了参与妇女健康倡议（WHI）的绝经后妇女自我报告的饮食质量中季节性的作用。共有156，911名妇女在入学时（1993-1998年）完成了食物频率问卷（FFQ）。FFQ反应反映了前3个月的摄入量，季节定义为春季（3月至5月），夏季（6月至8月），秋季（9月至11月）和冬季（12月至2月）。FFQ数据用于计算替代健康饮食指数（AHEI），这是一种饮食质量的衡量标准，得分范围为2.5-87.5，得分越高代表饮食质量越好。在以冬季为参考季节的多变量线性回归模型中，春季、夏季和秋季的AHEI评分较高（所有P值均< 0.05）;尽管差异显着，但方差很小（平均AHEI评分：冬季，41.7（标准差，11.3）;夏季，42.2（标准差，11.3））。将这些发现应用于饮食质量及其与慢性疾病风险（心血管疾病）关系的假设驱动关联分析表明，控制季节对估计的风险比没有影响。尽管在美国绝经后妇女人群中可以检测到不同季节饮食质量的显著差异，但这些差异不足以在饮食质量的相关研究中予以考虑。
We evaluated the role of seasonality in self-reported diet quality among postmenopausal women participating in the Women's Health Initiative (WHI). A total of 156,911 women completed a food frequency questionnaire (FFQ) at enrollment (1993-1998). FFQ responses reflected intake over the prior 3-month period, and seasons were defined as spring (March-May), summer (June-August), fall (September-November), and winter (December-February). FFQ data were used to calculate the Alternate Healthy Eating Index (AHEI), a measure of diet quality that has a score range of 2.5-87.5, with higher scores representing better diet quality. In multivariable linear regression models using winter as the reference season, AHEI scores were higher in spring, summer, and fall (all P values < 0.05); although significant, the variance was minimal (mean AHEI score: winter, 41.7 (standard deviation, 11.3); summer, 42.2 (standard deviation, 11.3)). Applying these findings to hypothesis-driven association analysis of diet quality and its relationship with chronic disease risk (cardiovascular disease) showed that controlling for season had no effect on the estimated hazard ratios. Although significant differences in diet quality across seasons can be detected in this population of US postmenopausal women, these differences are not substantial enough to warrant consideration in association studies of diet quality.