Evaluation of web-based, self-administered, graphical food frequency questionnaire.

Computer-administered food frequency questionnaires (FFQs) can address limitations inherent in paper questionnaires by allowing very complex skip patterns, portion size estimation based on food pictures, and real-time error checking. We evaluated a web-based FFQ, the Graphical Food Frequency System (GraFFS). Participants completed the GraFFS, six telephone-administered 24-hour dietary recalls over the next 12 weeks, followed by a second GraFFS.

New technology in dietary assessment: a review of digital methods in improving food record accuracy.

Methods for conducting dietary assessment in the United States date back to the early twentieth century. Methods of assessment encompassed dietary records, written and spoken dietary recalls, FFQ using pencil and paper and more recently computer and internet applications. Emerging innovations involve camera and mobile telephone technology to capture food and meal images.

Development of the Iowa bone nutrient food frequency questionnaire based on data from the US Department of Agriculture Continuing Survey of the Food Intake by Individuals.

An easily administered food frequency questionnaire (FFQ)/dietary screener was developed for current (adult) and retrospective (adolescent) intakes of nutrients important for bone development and maintenance. This tool quantified serving sizes and nutrients from foods using gender and age specific techniques. Nutrients of interest were calcium, vitamin D, caffeine and alcohol, and 15 categories of foods were selected for inclusion based on frequency of intake and nutrient density.

Relative validity of the Iowa Fluoride Study targeted nutrient semi-quantitative questionnaire and the block kids' food questionnaire for estimating beverage, calcium, and vitamin D intakes by children.

Objective: Food frequency questionnaires are commonly developed and subsequently used to investigate relationships between dietary intake and disease outcomes; such tools should be validated in the population of interest. We investigated the relative validities of the Iowa Fluoride Study targeted nutrient semi-quantitative questionnaire and Block Kids' Food Questionnaire in assessing beverage, calcium, and vitamin D intakes using 3-day diaries for reference.

Design: Cross-sectional.

Food composition data: the foundation of dietetic practice and research.

Food composition databases and dietary assessment systems are important tools for food and nutrition professionals. The availability and accessibility of data have improved over time along with the technology to convert the information into useful formats for planning diets, writing educational materials, counseling patients, and conducting research. Primary sources of food composition data include government, academic, and other institutional databases; the food industry; and scientific literature.

Diet quality in young children is influenced by beverage consumption.

Background: Replacement of milk with sugar-containing beverages could affect calcium intake and overall diet quality.

Objective: To describe dairy food, 100% juice and added sugar beverage intakes, contributions of dairy foods to diet quality, and effects of beverages on diet quality in young children.

Methods: We surveyed participants in the Iowa Fluoride Study (n = 645) at ages 1, 2, 3, 4 and 5 years and calculated intakes for 1-5 years (i.

Associations between Intakes of fluoride from beverages during infancy and dental fluorosis of primary teeth.

Objective: We describe associations between primary tooth fluorosis status and intakes of beverages and fluoride from these beverages during infancy.

Methods: Subjects (n = 677) are members of the Iowa Fluoride Study, a cohort of young children followed from birth. Food and nutrient intakes were obtained from 3-day diet records.

Patterns of beverage consumption during the transition stage of infant nutrition.

We describe beverage intakes during the transition stage of infant nutrition. Mean daily intakes of infant formula, cow's milk, combined juice and juice drinks, water, and other beverages estimated from a beverage frequency questionnaire were analyzed cross-sectionally at ages six through 24 months (n=701). Most children (97%) consumed human milk, infant formula, or cows' milk at each age studied.

Dental caries and beverage consumption in young children.

Objective: Dental caries is a common, chronic disease of childhood. The impact of contemporary changes in beverage patterns, specifically decreased milk intakes and increased 100% juice and soda pop intakes, on dental caries in young children is unknown. We describe associations among caries experience and intakes of dairy foods, sugared beverages, and nutrients and overall diet quality in young children.

Relative validation of a beverage frequency questionnaire in children ages 6 months through 5 years using 3-day food and beverage diaries.

Objective: To determine the relative validity of a quantitative beverage frequency questionnaire in assessing beverage, calcium, and vitamin D intakes using 3-day food diaries for reference.

Design: Parents were asked to complete questionnaires for the preceding week and diaries for the following week for their children. Calcium and vitamin D intakes were estimated from human milk, infant formulas, and cow's milk ("beverages") for questionnaires and diaries and from "all foods and beverages" for diaries.

Oral health, nutrient intake and dietary quality in the very old.

Background: Limited food choices and inadequate nutrient intake are linked to poor oral health. The authors describe relationships between dietary variety, nutrient intake and oral health measures in community-dwelling, rural Iowans aged 79 years and older.

Methods: Dental examinations were conducted by trained and calibrated examiners, and trained interviewers completed standardized interviews in subjects' homes.