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Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc
Appendix D provides comparable information from the 1994–1996 CSFII for boron, copper, iron, and zinc. Appendix E gives the mean and first through ninety-ninth percentiles of dietary intakes of vitamin K, arsenic, copper, iodine, iron, manganese, nickel, silicon, and zinc from the FDA Total Diet Study. Appendix F provides means and selected percentiles of dietary intakes of vitamin A, iron, and zinc for individuals in Québec and Nova Scotia.
Sources of Supplement Intake Data
Although subjects in the CSFII (1994–1996) were asked about the use of dietary supplements, quantitative information was not collected. Data on supplement intake obtained from NHANES III were reported as a part of total intake of vitamin K, copper, iron, and zinc (Appendix C). Intake, based on supplement intake alone for vitamin A, boron, chromium, iodine, manganese, molybdenum, nickel, silicon, and vanadium, is also reported in Appendix C. NHANES III data on overall prevalence of supplement use are also available (LSRO/FASEB, 1995). In 1986, the National Health Interview Survey queried 11,558 adults and 1,877 children on their intake of supplements during the previous 2 weeks (Moss et al., 1989). The composition of the supplement was obtained directly from the product label whenever possible. Table 2-2 shows the percentage of