. "C Dietary Intake Data from the Third National Health and Nutrition Examination Survey (NHANES III), 1988–1994." Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: The National Academies Press, 2000.
NOTE: Estimated mean and standard deviation, and selected percentiles of the usual intake distribution of vitamin C, computed using intake from food sources alone. Dietary intake data are from NHANES III, and the distribution was adjusted using C-SIDE and the method presented in Nusser SM, Carriquiry AL, Dodd KW, Fuller WA. 1996. A semiparametric transformation approach to estimating usual daily intake distributions. J Am Stat Assoc 91:1440–1449. Data corresponding to age groups 0–6 months, 7–12 months, and 1–3 years of age were not adjusted because no replicate vitamin C intake data are available for children under 3 years.