DEVELOPMENT AND TESTING OF A 7-DAY DIETARY RECALL

Using multiple 24-hr recalls (24HR) we tested the Seven Day Dietary Re call (7DDR) developed to assess nutrient exposures, especially lipids, in dietary interventions and other clinical trials requiring measurem ent of effect over moderate time periods. A total of 261 individuals i n three studies completed a 7DDR at the end of a 3- to 5-week period d uring which 3 to 7 24HR were telephone-administered on randomly select ed days. One of these studies ansi data from one additional study (tot al n = 678) allowed us to test the ability of the 7DDR to predict seru m lipid changes in an intervention setting. In correlation and linear regression analyses, high levels of agreement between 7DDR and 24HR we re obtained. For total energy: r = 0.67 and b = 0.69, and for total fa t intake (g/day): r = 0.67 and b = 0.80. When 7 days of 24HR were avai lable agreement tended to be higher. For total energy: r = 0.69 and b = 0.95, and for total fat (g/day): r = 0.71 and b = 1.04. Data derived from the 7DDR and fit to the Keys and Hegsted equations closely predi cted actual changes in total serum cholesterol (within 15% and 10%, re spectively). The 7DDR is a relatively easily administered, sensitive m ethod to assess short-term changes in dietary fat consumption in indiv iduals. (C) 1997 Elsevier Science Inc.