Telephone surveys as a method for obtaining dietary information: a review.

摘要: The use of telephone surveys has increased significantly in the past decade. One advantage is ability to reach a large number individuals: 97% US population owns telephones. Another cost savings: as little one quarter half amount face-to-face surveys. Computer-assisted interviewing improved data collection, coding, and analysis. Random-digit dialing statistical advances such weighting stratification have enhanced sample selection research design increasing need collect dietary information from populations an affordable fashion expanded To date, been used for follow-up after initial contact made. most common instruments are 24-hour recall food frequency questionnaire. This review indicates that well-designed well-administered good as, may be better than, other methods obtaining information.