Reproducibility and relative validity of dietary glycaemic index and load assessed with a self-administered diet-history questionnaire in Japanese adults

¹ Nutritional Epidemiology Program, National Institute of Health and Nutrition, Toyama 1-23-1, Shinjuku-ku, Tokyo 162-8636, Japan

² Department of Nutrition Sciences, Kagawa Nutrition University, Saitama, Japan

³ Department of Health and Nutritional Science, Faculty of Human Health Science, Matsumoto University, Matsumoto, Japan

⁴ Food Science and Nutrition Department, Tottori College, Tottori, Japan

⁵ Department of Statistics, Osaka City University Medical School, Osaka, Japan

⁶ Department of Food Science and Nutrition, Faculty of Human Life and Environment, Nara Women's University, Nara, Japan