Reproducibility and relative validity of dietary glycaemic index and load assessed with a self-administered diet-history questionnaire in Japanese adults
Reproducibility and relative validity of dietary glycaemic index and load assessed with a self-administered diet-history questionnaire in Japanese adults
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DOI：
10.1017/s0007114507812086
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发表时间：
2008-03-01
影响因子：
3.6
通讯作者：
Date, Chigusa
中科院分区：
文献类型：
--
作者：
Murakami, Kentaro;Sasaki, Satoshi;Date, Chigusa
虽然许多流行病学研究已经检查了饮食代谢指数（GI）和代谢负荷（GL）与健康结果的关系，但从饮食问卷中估计的这些变量的重现性和相对有效性的信息非常有限。我们研究了饮食GI和GL的再现性和相对有效性评估与自我管理的饮食史问卷（DHQ）在日本成年人。共有92名日本女性和92名日本男性，年龄在31-76岁之间，在I年期间（分别为DHQ 1 -4和DR 1 -4）的每个季节完成了DHQ（评估前一个月的饮食）和4d饮食记录（DR），并在完成DHQ 1（DHQ 5）后的I年完成了DHQ。我们使用DHQ 1和DHQ 5之间的组内相关性来评估再现性，使用DR 1 -4的平均值与DHQ 1 -4的平均值之间以及DR 1 -4的平均值与DHQ 1之间的Pearson相关性来评估相对有效性。饮食GI和GL的生殖相关性在女性中分别为0.57和0.69，在男性中分别为0.65和0.58。DHQ 1 -4评估的饮食GI和GL的有效性相关性在女性中分别为0.72和0.66，在男性中分别为0.65和0.71。DHQ 1的相应相关性在女性中分别为0.53和0.58，在男性中分别为0.57和0.60。在两种方法中，白色大米是GI和GL的主要贡献者（49- 64%）。这些数据表明合理的再现性和相对有效性的饮食GI和GL的DHQ评估日本成年人，其饮食GI和GL主要由GI的白色大米。
Although many epidemiological studies have examined the association of dietary glycaemic index (GI) and glycaemic load (GL) with health outcomes, information on the reproducibility and relative validity of these variables estimated from dietary questionnaires is extremely limited. We examined the reproducibility and relative validity of dietary GI and GL assessed with a self-administered diet-history questionnaire (DHQ) in adult Japanese. A total of ninety-two Japanese women and ninety-two Japanese men aged 31-76 years completed the DHQ (assessing diet during the preceding month) and 4d dietary records (DR) in each season over a I-year period (DHQ1-4 and DR1-4, respectively) and the DHQ at I year after completing DHQ1 (DHQ5). We used intraclass correlations between DHQ1 and DHQ5 to assess reproducibility, and Pearson correlations between the mean of DR1-4 and mean of DHQ1-4 and between the mean of DR1-4 and DHQ1 to assess relative validity. Reproducibility correlations for dietary GI and GL were 0.57 and 0.69 among women and 0.65 and 0.58 among men, respectively. Validity correlations for dietary GI and GL assessed by DHQ1-4 were 0.72 and 0.66 among women and 0.65 and 0.71 among men, respectively. Corresponding correlations for DHQ1 were 0.53 and 0.58 among women and 0.57 and 0.60 among men, respectively. White rice was the major contributor to GI and GL in both methods (49-64 %). These data indicate reasonable reproducibility and relative validity of dietary GI and GL assessed by a DHQ for Japanese adults, whose dietary GI and GL are primarily determined by the GI of white rice.