Schakel Sally F, Dennis Barbara H, Wold A Christine, Conway Rana, Zhao Liancheng, Okuda Nagako, Okayama Akira, Moag-Stahlberg Alicia, Robertson Claire, Van Heel Nancy, Buzzard I Marilyn, Stamler Jeremiah
Nutrition Coordinating Center, University of Minnesota, Minneapolis, MN, USA.
University of North Carolina, Chapel Hill, North Carolina, NC, USA.
J Food Compost Anal. 2003 Jun;16(3):395-408. doi: 10.1016/S0889-1575(03)00043-7. Epub 2003 May 23.
The International Study of Macronutrients and Blood Pressure (INTERMAP) is a four-country study investigating relationships between individual dietary intakes and blood pressure. Dietary intake patterns of individuals were estimated for macronutrients (proteins, lipids, carbohydrates, alcohol) and their components (amino acids, fatty acids, starch), as well as minerals, vitamins, caffeine, and dietary fiber. The dietary assessment phase of the study involved collection of four 24-h recalls and two 24-h urine specimens from each of 4680 adults, ages 40-59, at 16 centers located in the People's Republic of China, Japan, the United Kingdom and the United States. For each country, an available database of nutrient composition of locally consumed foods was updated for use in the analysis of dietary data collected within the country. The four original databases differed in number and types of foods and nutrients included, analytic methods used to derive nutrients, and percentage of missing nutrient values. The Nutrition Coordinating Center at the University of Minnesota updated the original databases in several ways to overcome the foregoing limitations and increase comparability in the analyses of nutrient intake of individuals across the four countries: (1) addition of new foods and preparation methods reported by study participants; (2) addition of missing nutrient fields important to the study objectives; (3) imputation of missing nutrient values to provide complete nutrient data for each food reported by participants; and (4) use of adjustment factors to enhance comparability among estimates of nutrient intake obtained through each country's nutrient-coding methodology. It was possible to expand, enhance, and adjust the nutrient databases from the four countries to produce comparable (60 nutrients) or nearly comparable (ten nutrients) data on composition of all foods reported by INTERMAP participants.
宏量营养素与血压国际研究（INTERMAP）是一项四国研究，旨在调查个体饮食摄入量与血压之间的关系。研究估计了个体对宏量营养素（蛋白质、脂质、碳水化合物、酒精）及其成分（氨基酸、脂肪酸、淀粉）以及矿物质、维生素、咖啡因和膳食纤维的饮食摄入模式。该研究的饮食评估阶段包括从位于中国、日本、英国和美国的16个中心的4680名40至59岁成年人中，每人收集4次24小时饮食回顾和2份24小时尿液样本。对于每个国家，更新了当地消费食品营养成分的可用数据库，以用于分析在该国收集的饮食数据。四个原始数据库在所含食物和营养素的数量与类型、用于得出营养素的分析方法以及缺失营养素值的百分比方面存在差异。明尼苏达大学营养协调中心以多种方式更新了原始数据库，以克服上述限制并提高对四个国家个体营养摄入量分析的可比性：（1）添加研究参与者报告的新食物和制备方法；（2）添加对研究目标重要但缺失的营养素字段；（3）对缺失的营养素值进行插补，以提供参与者报告的每种食物的完整营养数据；（4）使用调整因子来提高通过每个国家的营养编码方法获得的营养摄入量估计值之间的可比性。可以对来自四个国家的营养数据库进行扩展、增强和调整，以生成关于INTERMAP参与者报告的所有食物成分的可比（60种营养素）或近乎可比（10种营养素）的数据。
