Drewett R F, Woolridge M W, Jackson D A, Imong S M, Mangklabruks A, Wongsawasdii L, Chiowanich P, Amatayakul K, Baum J D
Department of Psychology, University of Durham, U.K.
Early Hum Dev. 1989 Sep;20(1):13-23. doi: 10.1016/0378-3782(89)90069-8.
Relationships between nursing patterns, supplementary food intake and breast-milk intake were examined in a group of 52 Thai babies under 1 year of age. All data were collected over two consecutive days, 24 h/day. Total sucking time (min/day) and supplementary food intake (kcal/day) were significant predictors of breast-milk intake after allowing for the age of the baby: R-squared is 0.32 for sucking time and 0.39 for supplementary food intake. The two variables were themselves correlated (r is -0.47). The number of breastfeeds per day and their mean duration was determined for each case, counting each episode of attachment to the breast as a separate feed. Number and mean duration of breastfeeds were then evaluated as predictor variables. The duration of feeds had no predictive power. Number of feeds was linearly related to milk intake and combined with age was as good a predictor of milk intake as total sucking time (with R-squared 0.34). These results suggest that a simple count of breastfeeds is as valuable as more complex measures of sucking duration in predicting to breast-milk intake.
对一组52名1岁以下的泰国婴儿的护理模式、辅食摄入量和母乳摄入量之间的关系进行了研究。所有数据在连续两天内每天24小时收集。在考虑婴儿年龄后，总吸吮时间（分钟/天）和辅食摄入量（千卡/天）是母乳摄入量的显著预测因素：吸吮时间的决定系数为0.32，辅食摄入量的决定系数为0.39。这两个变量本身具有相关性（r为-0.47）。确定每个案例每天的母乳喂养次数及其平均持续时间，将每次附着在乳房上的情况视为一次单独的喂养。然后将母乳喂养的次数和平均持续时间作为预测变量进行评估。喂养持续时间没有预测能力。喂养次数与母乳摄入量呈线性关系，并且与年龄相结合，与总吸吮时间一样是母乳摄入量的良好预测指标（决定系数为0.34）。这些结果表明，在预测母乳摄入量方面，简单的母乳喂养次数计数与更复杂的吸吮持续时间测量一样有价值。
