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Article: New reference for the age at childhood onset of growth and secular trend in the timing of puberty in Swedish

TitleNew reference for the age at childhood onset of growth and secular trend in the timing of puberty in Swedish
Authors
KeywordsChild growth
Childhood onset of growth
Longitudinal study
Timing of puberty
Issue Date2000
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journal.asp?ref=1328-8067&site=1
Citation
Acta Paediatrica, International Journal Of Paediatrics, 2000, v. 89 n. 6, p. 637-643 How to Cite?
AbstractThe objectives of the present work were to present a new reference for the age at childhood onset of growth and to investigate the secular trend in the timing of puberty in a community-based normal population in Sweden. A total of 2432 children with longitudinal length/height data from birth to adulthood were used to determine the two measures by visual inspection of the measured attained length/height and the change in growth velocity displayed on a computer-generated infancy-childhood-puberty (ICP) based growth chart. The series represents a sample of normal full-term children born around 1974 in Goteborg, Sweden. We found about 10% of children were delayed (>12 mo of age) in the childhood onset of growth based on the previous reported normal range, i.e. 14% in boys and 8% in girls. Distribution of the age at childhood onset of growth was skewed. The medians were 10 and 9 mo for boys and girls, respectively. After natural logarithmic transformation, the mean and standard deviation (SD) were 2.29 (anti-log 9.9 mo) and 0.226 for boys, 2.23 (anti-log 9.3 mo) and 0.220 for girls, respectively. The 95% normal ranges were 6.3-15.4 and 6.0-14.3 for boys and girls, respectively. The distribution of the timing of PHV was close to the normal distribution. The mean values were 13.5 y for boys and 11.6 y for girls with 1 y SD for both sexes. Conclusion: A downward secular trend in the onset of puberty was clearly shown in the population. The age at childhood onset of growth did not correlate with the timing of puberty (r = -0.01 and 0.05, p > 0.7 and 0.1 in boys and girls, respectively). Normal ranges of the age at childhood onset of growth are in need of revise, as this study indicates. The new reference presented here could be a reliable indicator in further studies.
Persistent Identifierhttp://hdl.handle.net/10722/80038
ISSN
2015 Impact Factor: 1.647
2015 SCImago Journal Rankings: 0.794
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, YXen_HK
dc.contributor.authorAlbertsson Wikland, Ken_HK
dc.contributor.authorKarlberg, Jen_HK
dc.date.accessioned2010-09-06T08:01:39Z-
dc.date.available2010-09-06T08:01:39Z-
dc.date.issued2000en_HK
dc.identifier.citationActa Paediatrica, International Journal Of Paediatrics, 2000, v. 89 n. 6, p. 637-643en_HK
dc.identifier.issn0803-5253en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80038-
dc.description.abstractThe objectives of the present work were to present a new reference for the age at childhood onset of growth and to investigate the secular trend in the timing of puberty in a community-based normal population in Sweden. A total of 2432 children with longitudinal length/height data from birth to adulthood were used to determine the two measures by visual inspection of the measured attained length/height and the change in growth velocity displayed on a computer-generated infancy-childhood-puberty (ICP) based growth chart. The series represents a sample of normal full-term children born around 1974 in Goteborg, Sweden. We found about 10% of children were delayed (>12 mo of age) in the childhood onset of growth based on the previous reported normal range, i.e. 14% in boys and 8% in girls. Distribution of the age at childhood onset of growth was skewed. The medians were 10 and 9 mo for boys and girls, respectively. After natural logarithmic transformation, the mean and standard deviation (SD) were 2.29 (anti-log 9.9 mo) and 0.226 for boys, 2.23 (anti-log 9.3 mo) and 0.220 for girls, respectively. The 95% normal ranges were 6.3-15.4 and 6.0-14.3 for boys and girls, respectively. The distribution of the timing of PHV was close to the normal distribution. The mean values were 13.5 y for boys and 11.6 y for girls with 1 y SD for both sexes. Conclusion: A downward secular trend in the onset of puberty was clearly shown in the population. The age at childhood onset of growth did not correlate with the timing of puberty (r = -0.01 and 0.05, p > 0.7 and 0.1 in boys and girls, respectively). Normal ranges of the age at childhood onset of growth are in need of revise, as this study indicates. The new reference presented here could be a reliable indicator in further studies.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journal.asp?ref=1328-8067&site=1en_HK
dc.relation.ispartofActa Paediatrica, International Journal of Paediatricsen_HK
dc.subjectChild growthen_HK
dc.subjectChildhood onset of growthen_HK
dc.subjectLongitudinal studyen_HK
dc.subjectTiming of pubertyen_HK
dc.titleNew reference for the age at childhood onset of growth and secular trend in the timing of puberty in Swedishen_HK
dc.typeArticleen_HK
dc.identifier.emailKarlberg, J: jpekarl@hkucc.hku.hken_HK
dc.identifier.authorityKarlberg, J=rp00400en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid10914954-
dc.identifier.scopuseid_2-s2.0-0033891966en_HK
dc.identifier.hkuros49706en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0033891966&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume89en_HK
dc.identifier.issue6en_HK
dc.identifier.spage637en_HK
dc.identifier.epage643en_HK
dc.identifier.isiWOS:000088027800004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, YX=14068710900en_HK
dc.identifier.scopusauthoridAlbertsson Wikland, K=19639814800en_HK
dc.identifier.scopusauthoridKarlberg, J=7005218406en_HK

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