There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
A food-frequency questionnaire (FFQ) for low-income Mexican-Americans in Starr County,
Texas, was developed as part of an epidemiologic study of gallbladder disease during
1985 and 1986. The FFQ was developed from 7-day food records collected from the first
sample. In the validity study, using the second sample, correlations between nutrients
calculated from 3-day food records and the FFQ were 0.77, 0.76, and 0.61 for energy,
total fat, and saturated fat, respectively. In the reliability study, using the third
sample, for the 1-month interval between baseline and a repeat FFQ measurement correlations
ranged from 0.90 for energy to 0.85 for total fat and for the 2-month interval they
were 0.84 for energy and 0.70 for total fat. The high correlations are largely explained
by the lack of diversity in the diets of Starr County individuals which facilitated
the high agreement between the FFQ and the food records for estimates of energy, fats,
and cholesterol.