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New Reference for Height in Swedish Boys and Girls

Poster (konferens)
Författare Kerstin Albertsson-Wikland
Aimon Niklasson
Lars Gelander
Anton Holmgren
Andreas F M Nierop
Publicerad i Hormone Research in Paediatrics. 82 (suppl 1), s. 256. 53rd Annual Meeting of the European Society for Paediatric Endocrinology (ESPE). Dublin, Ireland, September 18-20, 2014. Hormone Research in Paediatrics.
ISSN 1663-2818
Publiceringsår 2014
Publicerad vid Institutionen för kliniska vetenskaper, Avdelningen för pediatrik
Språk en
Länkar dx.doi.org/10.1159/000365775
Ämneskategorier Klinisk medicin, Pediatrik

Sammanfattning

Background: The actual Swedish growth references are based on a cohort born 1974. Objective and hypotheses: Due to secular changes there is need for new height references. Method: Material: Height measurements from birth to adult height (AH) in a cohort of healthy, Nordic and born full term 1990, 20.796 from 1647 boys, 19.202 from 1501 girls were used (ALL) and compared to both a subgroup with puberty close to mean (PHV G0.25 years) of 3.726 heights from 259 boys; 3.759 from 271 girls, and a subgroup (AM) with O10 height measurements evenly distributed (15.324 in 989 boys; 14.381 in 919 girls), and of high data quality. The 1974 cohort, with similar subgrouping, were used for comparison. Methods: For construction of height curves the LMS method was applied with LMS parameters based directly on the data: the power in the Box-Cox transformation (L), the median (M), and the generalized coefficient of variation (S). The GAMLSS R-package with a special LMS program was used, giving L, M, S and optional kurtosis as functions of age. Results: Height reference curves, with mean, G1, G2 SDS were obtained for 1990 of the ALL vs the AM material with similar results whereas the close puberty material showed the same mean but more narrow G1, G2 SDS during adolescence. When the different 1990 references were compared to 1974 references, the corresponding 1974 differences were found. The new references takes into account that the 1990 cohort had a more rapid infancy growth, increased prepubertal growth, especially in boys, increased pubertal gain, only in girls, and increased AH in both genders.

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