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5. Percentile growth standards of physical development of modern Moscow infants

Percentile growth standards of physical development of modern Moscow infants

Fedotova T.K.,Gorbacheva A.K.

Lomonosov Moscow State University, Anuchin Research Institute and Museum of Anthropology, Mokhovaya st., 11, Moscow, 125009, Russia

Fedotova Tatiana K, Ph.D., D.Sc., ORCID ID: 0000-0001-7750-7924, e-mail: tatiana.fedotova@mail.ru; Gorbacheva Anna K., Ph.D., ORCID ID: 0000-0001-5201-7128, e-mail: angoria@yandex.ru

Abstract

Introduction. The comparison of the data on growth and development of the infants, collected by the authors in 2009 and 2013, with the sample series of Moscow of XX century, allowed to distinguish some secular changes, among them the tendency of lepthosomization of infants, which makes urgent the elaboration of percentile growth standards of modern Moscow infants through the first year of life. Material and methods. The data for elaborating percentile standards is based on the longitudinal data series on growth and development dynamics of infants, collected in 2009 and 2013 in child outpa-tient clinics of two administrative districts of Moscow: Eastern and Western. The age of the patients is from birth to 12 months. The total number of the sample is about 500. The data was divided into age groups with 1 month interval using standard gradations for length and mass and 3 month interval for head and chest circumferences. Thus 3 months old group included boys and girls aged from 2 months 16 days till 3 months 15 days. The sum of percentiles – 5th, 25th, 50th, 75th and 95th – was determined for each feature and each sex/age groups. Though the meanings of percentiles for different age groups are esti-mated for the same children due to the longitudinal character of the study, to avoid the influence of acci-dental variation of statistical values this study appeals to the method of analytic smoothing of the patterns of age dynamics of each percentile using the method of least squares. Results and application. Percentile standards are available in two variants, each of them may be used in practice: 1) smoothed graphical percentile standards; 2) values of percentile standards for the age groups of children with month intervals presented in the table. Conclusions. According to the noted by Moscow anthropologists rates of secular changes of so-matic status of children through the latest decades, these standards will keep urgent during the next dec-ade or two.

Keywords

anthropology, physical development, infants, weight, height, head and chest circumferences, percentile standards

Цит.: Fedotova T.K.,Gorbacheva A.K. Percentile growth standards of physical development of modern Moscow infants // Moscow University Anthropology Bulletin (Vestnik Moskovskogo Universiteta. Seria XXIII. Antropologia), 2015; 1/2015; с. 123-131