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Comparison of a one‐month recall and a one‐month diary of dietary supplement use: Results from the SURE Study
Author(s) -
Wilkens Lynne Ross,
Steffen Alana,
Morimoto Yukiko,
Monroe Kristine,
Yonemori Kim,
Albright Cheryl,
Murphy Suzanne
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.159.7
Subject(s) - medicine , multivitamin , dietary supplement , recall , vitamin , food science , psychology , biology , cognitive psychology
Information on dietary supplement intake has rarely been compared across methods. The Supplement Reporting (SURE) Study evaluated the most common methods of collecting dietary supplement use data among participants of the Multiethnic Cohort Study in Hawaii and Los Angeles who reported use of at least one supplement. In the first year of the study, 205 participants completed a one‐month diary of supplement use and an open‐ended recall at the end of the period covering the month. The supplements were categorized into 22 broad supplement types (4 multivitamins, 12 single nutrients, and 6 herbals). The percentage reporting usage ranged from <1% for vitamin A, ginseng and wheat grass to 67% for regular multivitamins with minerals (MVM) on the one‐month recall. The percentages were similar, but slightly higher, for the diary (e.g., 71% reported use of MVM). Kappa coefficients comparing use on the two instruments were good to excellent, ranging from 0.49 for multivitamins with no minerals to 0.91 for folic acid as a single nutrient; there was complete agreement for ginseng and wheat grass. Most (86%) of the kappas exceeded 0.60. The recall and diary methods agreed well over a 1‐month period. Future analyses will compare these methods for a shorter time period (2 weeks) as well as compare them to an inventory of supplements. Supported by NCI, grant # R01 CA106744.