CRITICAL ANALYSIS OF DOUBLE AND TRIPLE LOGISTIC GROWTH-CURVES
CRITICAL ANALYSIS OF DOUBLE AND TRIPLE LOGISTIC GROWTH-CURVES
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DOI：
10.1080/03014467800003021
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发表时间：
1978-01-01
影响因子：
1.7
通讯作者：
ELLOZY, M
中科院分区：
文献类型：
--
作者：
ELLOZY, M
最近，一个基于两个Logistic项的人类从一岁到成熟的生长模型被提出。该模型的发起人声称，它提供了具有生物学意义的参数，并允许将总的生长分为青春期前和青春期部分。最近，他们提出了一个改进的模型，其中有三个逻辑术语，这让它更适合。虽然双Logistic模型对观测高度曲线进行了适当的拟合，但对其进行区分会得到与观测速度曲线有很大不同的高度速度曲线。三重Logistic模型对获得的高度和高度速度曲线都有很好的拟合效果。然而，这两个模型都暗示了相当长的时间间隔，在此期间，青春期前和青春期的组成部分同时对生长做出贡献，这种情况很难从生物学上证明是合理的。因此，应该摒弃双重模式，认为三重逻辑模式具有描述性价值，而不是解释性价值。
Recently a model of human growth from the age of one year to maturity, based on two logistic terms, has been proposed. The originators of the model claim that it provides biologically meaningful parameters, and allows total growth to be partitioned into a pre-pubertal and an adolescent component. More recently, they have suggested an improved model, with three logistic terms, which gives a better fit. While the double logistic model gives an adequate fit to the observed height curve, differentiating it leads to a height velocity curve which differs considerably from the observed velocity curve. The triple logistic model gives an excellent fit to both the attained height and height velocity curves. Both models, however, imply a considerable time interval during which both the pre-pubertal and adolescent components are simultaneously contributing to growth, a situation that is difficult to justify biologically. The double model should therefore be discarded, and the triple logistic model considered to be of descriptive, rather than of interpretative, value.