Dubois S, Boivin J F
Department of Epidemiology and Biostatistics, McGill University, Montreal, Quebec, Canada.
J Am Diet Assoc. 1990 Dec;90(12):1680-7.
Accuracy of telephone-administered dietary recalls was determined for 159 elderly subjects by comparing the telephone recalls of single midday meals consumed at congregate meal sites with data on actual intake for the meals. Accuracy was determined for kinds of food eaten, size of portions eaten, and content of 15 nutrients. Exact agreement between the two data sources on the kinds of food eaten occurred for only 55% of the observed food items. For 5 of the 10 food groups evaluated, the bias in mean recalled portion-size data was less than 10%. There was evidence of attenuated regression slopes relating recalled to observed portion sizes for 4 of the 10 food groups; adjusted r2 values for the recalled portion sizes ranged from 0.02 to 0.94. Because errors in the recalls of the kinds and amounts eaten tended to go in different directions, the accuracy of the nutrient data was better than that for the food-item or the portion-size data. For 12 of the 15 nutrients evaluated, the bias in mean recalled intake data was less than 10%. Although the adjusted r2 values for the recalled nutrient data ranged from 0.24 to 0.58, there was evidence of attenuated regression slopes relating recalled intake to observed intake for only 5 of the 15 nutrients. We conclude that telephone contact is an acceptable way to obtain short-term dietary recall data from elderly subjects.
通过将在集体用餐场所食用的单一午餐的电话回忆与餐食实际摄入量数据进行比较，确定了159名老年受试者电话膳食回忆的准确性。对所吃食物种类、食用份量大小以及15种营养素的含量进行了准确性测定。在观察到的食物项目中，两种数据来源在所吃食物种类上完全一致的情况仅占55%。在评估的10个食物组中的5个中，平均回忆份量大小数据的偏差小于10%。有证据表明，10个食物组中有4个食物组的回忆份量大小与观察到的份量大小之间的回归斜率减弱；回忆份量大小的调整r2值范围为0.02至0.94。由于在食物种类和食用量回忆方面的误差往往朝着不同方向，营养素数据的准确性优于食物项目或份量大小数据。在评估的15种营养素中的12种中，平均回忆摄入量数据的偏差小于10%。虽然回忆营养素数据的调整r2值范围为0.24至0.58，但在15种营养素中只有5种有证据表明回忆摄入量与观察到的摄入量之间的回归斜率减弱。我们得出结论，电话联系是从老年受试者获取短期膳食回忆数据的一种可接受的方式。
