Use of joinpoint regressions to evaluate changes over time in conscript height.
Journal
American journal of human biology : the official journal of the Human Biology Council
ISSN: 1520-6300
Titre abrégé: Am J Hum Biol
Pays: United States
ID NLM: 8915029
Informations de publication
Date de publication:
01 2022
01 2022
Historique:
revised:
26
12
2020
received:
09
11
2020
accepted:
06
01
2021
pubmed:
4
2
2021
medline:
3
2
2022
entrez:
3
2
2021
Statut:
ppublish
Résumé
Cohort variation in adult height expresses both the impact of socio-economic change on human biology in a wide temporal perspective and social inequalities within populations. We aimed to test the use of joinpoint regressions to identify periods in which changes in height trends were statistically significant. Data correspond to the height recorded in Madrid City (Spain) for 65 313 conscripts between 1936 and 1974 (cohorts from 1915 to 1953), a period of social and political turmoil. Secular trends in height were analyzed in eight districts with contrasting socio-economic conditions, grouped in two categories, lower-class and middle- and upper-class. Trends in height were evaluated by quadratic regressions and by joinpoint regressions to identify the cut-off years when trends changed significantly. Height increased in both socio-economic categories of districts, more among conscripts from the lower-class ones. However, results clearly show differences in trends according to district of residence. Whereas the increase in height in conscripts from the middle- and upper-class districts was steady, it was slower in those from the lower classes, with declines in height during the Civil War and first years of the Franco dictatorship. Joinpoint analysis reveals the association between urban living conditions and adult height, and that the disparities intensified during critical historical periods of Spain.
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e23572Informations de copyright
© 2021 Wiley Periodicals LLC.
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