Thomson Cynthia A, Giuliano Anna, Rock Cheryl L, Ritenbaugh Cheryl K, Flatt Shirley W, Faerber Susan, Newman Vicky, Caan Bette, Graver Ellen, Hartz Vern, Whitacre Robin, Parker Felicia, Pierce John P, Marshall James R
University of Arizona, Arizona Cancer Center, Tucson, AZ 85724, USA.
Am J Epidemiol. 2003 Apr 15;157(8):754-62. doi: 10.1093/aje/kwg025.
Measurement of dietary change was assessed in a systematic quota subsample (n = 397) of women recruited into the Women's Healthy Eating and Living Study between 1996 and 1998, a multicenter, randomized dietary intervention trial among breast cancer survivors. Women from the intervention and comparison arms completed the Arizona Food Frequency Questionnaire (AFFQ) and 24-hour dietary recalls at baseline (prerandomization) and at year 1 (postrandomization). Both dietary measurement methods demonstrated significant changes in intake of key intervention-associated nutrients at year 1 in the intervention group subjects compared with minimal or no change in the comparison group subjects. The reliability of the AFFQ and recalls was measured in the comparison group and showed correlations of 0.63 and 0.43, respectively. Both instruments captured differences in dietary intake associated with the diet intervention. These results demonstrate the utility of using a multimode, multimethod approach (AFFQ and 24-hour dietary recalls) to measure differences in self-reported dietary intake over time as shown in this dietary intervention trial being conducted among breast cancer survivors.
对1996年至1998年招募到“女性健康饮食与生活研究”中的397名女性进行系统配额子样本（n = 397）的饮食变化测量，该研究是一项针对乳腺癌幸存者的多中心随机饮食干预试验。干预组和对照组的女性在基线（随机分组前）和第1年（随机分组后）完成了亚利桑那食物频率问卷（AFFQ）和24小时饮食回顾。与对照组受试者摄入量极少变化或无变化相比，两种饮食测量方法均显示干预组受试者在第1年与关键干预相关营养素摄入量有显著变化。在对照组中测量了AFFQ和饮食回顾的可靠性，相关性分别为0.63和0.43。两种工具均捕捉到了与饮食干预相关的饮食摄入量差异。这些结果表明，如在这项针对乳腺癌幸存者进行的饮食干预试验中所示，采用多模式、多方法（AFFQ和24小时饮食回顾）来测量自我报告的饮食摄入量随时间的差异是有用的。
