Publication Details
Estimating Growth in Height from Limited Longitudinal Growth Data Using Full-Curves Training Dataset: A Comparison of Two Procedures of Curve Optimization-Functional Principal Component Analysis and SITAR
Klíma Ondřej, Ing., Ph.D. (DCGM FIT BUT)
Čuta Martin, Mgr., Ph.D. (MUNI)
Malina Robert M. (UTAUSTIN)
Koziel Slawomir (PAN)
Polcerová Lenka, Mgr. (MUNI)
Škultétyová Anna (SCI MUNI)
Španěl Michal, Ing., Ph.D. (DCGM FIT BUT)
Kukla Lubomír (LF MUNI)
Zemčík Pavel, prof. Dr. Ing. (DCGM FIT BUT)
human growth, growth modelling, functional data analysis, Sitar
A variety of models are available for the estimation of parameters of the human growth curve. Several have been widely and successfully used with longitudinal data that are reasonably complete. On the other hand, the modeling of data for a limited number of observation points is problematic and requires the interpolation of the interval between points and often an extrapolation of the growth trajectory beyond the range of empirical limits (prediction). This study tested a new approach for fitting a relatively limited number of longitudinal data using the normal variation of human empirical growth curves. First, functional principal components analysis was done for curve phase and amplitude using complete and dense data sets for a reference sample (Brno Growth Study). Subsequently, artificial curves were generated with a combination of 12 of the principal components and applied for fitting to the newly analyzed data with the Levenberg-Marquardt optimization algorithm. The approach was tested on seven 5-points/year longitudinal data samples of adolescents extracted from the reference sample. The samples differed in their distance from the mean age at peak velocity for the sample and were tested by a permutation leave-one-out approach. The results indicated the potential of this method for growth modeling as a user-friendly application for practical applications in pediatrics, auxology and youth sport.
@ARTICLE{FITPUB12616, author = "Miroslav Kr\'{a}l\'{i}k and Ond\v{r}ej Kl\'{i}ma and Martin \v{C}uta and M. Robert Malina and Slawomir Koziel and Lenka Polcerov\'{a} and Anna \v{S}kult\'{e}tyov\'{a} and Michal \v{S}pan\v{e}l and Lubom\'{i}r Kukla and Pavel Zem\v{c}\'{i}k", title = "Estimating Growth in Height from Limited Longitudinal Growth Data Using Full-Curves Training Dataset: A Comparison of Two Procedures of Curve Optimization-Functional Principal Component Analysis and SITAR", pages = "934--955", journal = "Children", volume = 8, number = 10, year = 2021, ISSN = "2227-9067", doi = "10.3390/children8100934", language = "english", url = "https://www.fit.vut.cz/research/publication/12616" }