Garcia P A, Battese G E, Brewer W D
J Gerontol. 1975 May;30(3):349-56. doi: 10.1093/geronj/30.3.349.
Dietary data from weighed food intake records were obtained from 35 women 29 years old and older during 4 studies from 1948 to 1966. Longitudinal data were analyzed by the use of a multiple linear-regression model with year of birth and age as independent variables. With increasing age, mean intakes declined significantly for fat, saturated fatty acids, and oleic acid, and increased significantly for calcium. After accounting for cohort effects, no significant changes occurred in mean intakes of food energy, carbohydrate, protein, phosphorus, iron, thiamin, riboflavin, preformed niacin, vitamin A, and ascorbic acid. For successive year of birth, mean intakes increased significantly for protein, calcium, phosphorus, riboflavin, preformed niacin, and linoleic acid. The regression model used explained approximately 20% of the variability in intakes of food energy and most nutrients examined.
1948年至1966年期间的4项研究收集了35名29岁及以上女性通过称重食物摄入量记录得到的饮食数据。纵向数据采用以出生年份和年龄为自变量的多元线性回归模型进行分析。随着年龄的增长，脂肪、饱和脂肪酸和油酸的平均摄入量显著下降，而钙的平均摄入量显著增加。在考虑队列效应后，食物能量、碳水化合物、蛋白质、磷、铁、硫胺素、核黄素、预形成烟酸、维生素A和抗坏血酸的平均摄入量没有显著变化。对于连续出生年份，蛋白质、钙、磷、核黄素、预形成烟酸和亚油酸的平均摄入量显著增加。所使用的回归模型解释了食物能量和大多数所研究营养素摄入量变异性的约20%。
