Publications by authors named "Kalman Joubert"

Background: Growth is volatile and non-linear. Assessing the instantaneous speed of growth (momentary height velocity) depends on the precision and the number of measurements and the duration of the observation period. Measurements at short intervals reflect both the non-linearity of growth and the technical error of measurements (TEM).

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Background: Neonatal development may have an influence on post-natal nutritional status. Age at adiposity rebound is critical for later development of nutritional status.

Aim: The objective was to analyse the relationship between neonatal development and post-natal changes in nutritional status.

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Objective: To study the influence of bodily development and nutritional status on perinatal mortality.

Methods: The authors developed a new method, the MDN system (MDN: Maturity, Development, Nutritional Status), to determine the development and nutritional status of newborns based on their weight and length standard positions. Using data of 680,947 neonates born in the 7 years from 1997 to 2003 in Hungary, they computed the perinatal mortality (PM) rate of each developmental groups of neonates.

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The authors study to what extent bodily development and nutritional status influence the viability of foetuses and neonates, that is, their perinatal mortality. They developed a new method, the MDN system (MDN: Maturity, Development, Nutritional status) to determine the weight and length standard positions of neonates in relation to reference standards on the basis of their gestational ages, birth weights and lengths. The system contains a chessboard-like matrix (or MDN Table) comprising 64 cells arranged in eight horizontal lines of the most common zones of weight percentile standards and eight vertical columns of the length percentile standards.

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The increase of physical stature in the developed countries and their socio-economic correlates has been well documented for nearly two centuries. In this study, the secular changes in height, weight and the BMI of Hungarian university students and conscripts are analyzed for the years 1933-1998. During the first half of this period these body measurements changed little, while in the second half the rates of change accelerated rapidly: height increased by 1.

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