Pan H, Ratcliffe S G
Department of Mathematics and Biostatistics, Shanghai Second Medical University, P.R. China.
Ann Hum Biol. 1992 May-Jun;19(3):303-16. doi: 10.1080/03014469200002172.
Further development of the optimal kernel (OK) method of growth curve analysis of Gasser et al. (1984b) is presented with the aim of eliminating the necessity of repeated changes in bandwidth to suit different characteristics of the velocity and acceleration curves at varying ages. After using the OK method to obtain a distance curve for height, we introduce a new method (VADK) to derive velocity and acceleration curves from the fitted distance curve. The results from growth data on 16 boys and 15 girls from the Edinburgh Longitudinal Study are presented in a preliminary test of this method in comparison with the OK estimation.
本文介绍了对加塞尔等人（1984b）生长曲线分析的最优核（OK）方法的进一步发展，目的是消除为适应不同年龄阶段速度和加速度曲线的不同特征而反复改变带宽的必要性。在用OK方法获得身高的距离曲线后，我们引入了一种新方法（VADK），从拟合的距离曲线中推导速度和加速度曲线。在对该方法与OK估计的初步测试中，展示了来自爱丁堡纵向研究的16名男孩和15名女孩生长数据的结果。
