Skip Navigation LinksHome > September 1998 - Volume 9 - Issue 5 > Measurement Error from Assessing Use of Vitamin Supplements...

Measurement Error from Assessing Use of Vitamin Supplements at One Point in Time.

Patterson, Ruth E.; Neuhouser, Marian L.; White, Emily; Kristal, Alan R.; Potter, John D.

Collapse Box


Although many epidemiologic studies ask about current use of vitamin supplements, long-term use is usually the exposure of etiologic interest. We conducted a mailed survey to investigate the relation between current and long-term (10-year) supplement use (N = 325 adults). Estimates of current daily intake for supplemental micronutrients were roughly twice that of average daily intake over the past 10 years. Correlations between current intake and long-term intake from supplements alone were 0.77, 0.75, and 0.65 for vitamin C, vitamin E, and calcium, respectively. A measure of supplement use at one point in time incorporates measurement error that will attenuate measures of association. (Epidemiology 1998;9:567-569)

(C) 1998 Lippincott Williams & Wilkins, Inc.

Twitter  Facebook  ‚Äč


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.