A prediction model for childhood obesity in New Zealand

Abstract Several early childhood obesity prediction models have been developed, but none for New Zealand's diverse population. We aimed to develop and validate a model for predicting obesity in 4–5-year-old New Zealand children, using parental and infant data from the Growing Up in New Zealand...

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Autores principales: Éadaoin M. Butler, Avinesh Pillai, Susan M. B. Morton, Blake M. Seers, Caroline G. Walker, Kien Ly, El-Shadan Tautolo, Marewa Glover, Rachael W. Taylor, Wayne S. Cutfield, José G. B. Derraik, COPABS Collaborators
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/2b2e43ec0dd945f7902cb27db5688c81
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spelling oai:doaj.org-article:2b2e43ec0dd945f7902cb27db5688c812021-12-02T17:05:46ZA prediction model for childhood obesity in New Zealand10.1038/s41598-021-85557-z2045-2322https://doaj.org/article/2b2e43ec0dd945f7902cb27db5688c812021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85557-zhttps://doaj.org/toc/2045-2322Abstract Several early childhood obesity prediction models have been developed, but none for New Zealand's diverse population. We aimed to develop and validate a model for predicting obesity in 4–5-year-old New Zealand children, using parental and infant data from the Growing Up in New Zealand (GUiNZ) cohort. Obesity was defined as body mass index (BMI) for age and sex ≥ 95th percentile. Data on GUiNZ children were used for derivation (n = 1731) and internal validation (n = 713). External validation was performed using data from the Prevention of Overweight in Infancy Study (POI, n = 383) and Pacific Islands Families Study (PIF, n = 135) cohorts. The final model included: birth weight, maternal smoking during pregnancy, maternal pre-pregnancy BMI, paternal BMI, and infant weight gain. Discrimination accuracy was adequate [AUROC = 0.74 (0.71–0.77)], remained so when validated internally [AUROC = 0.73 (0.68–0.78)] and externally on PIF [AUROC = 0.74 [0.66–0.82)] and POI [AUROC = 0.80 (0.71–0.90)]. Positive predictive values were variable but low across the risk threshold range (GUiNZ derivation 19–54%; GUiNZ validation 19–48%; and POI 8–24%), although more consistent in the PIF cohort (52–61%), all indicating high rates of false positives. Although this early childhood obesity prediction model could inform early obesity prevention, high rates of false positives might create unwarranted anxiety for families.Éadaoin M. ButlerAvinesh PillaiSusan M. B. MortonBlake M. SeersCaroline G. WalkerKien LyEl-Shadan TautoloMarewa GloverRachael W. TaylorWayne S. CutfieldJosé G. B. DerraikCOPABS CollaboratorsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Éadaoin M. Butler
Avinesh Pillai
Susan M. B. Morton
Blake M. Seers
Caroline G. Walker
Kien Ly
El-Shadan Tautolo
Marewa Glover
Rachael W. Taylor
Wayne S. Cutfield
José G. B. Derraik
COPABS Collaborators
A prediction model for childhood obesity in New Zealand
description Abstract Several early childhood obesity prediction models have been developed, but none for New Zealand's diverse population. We aimed to develop and validate a model for predicting obesity in 4–5-year-old New Zealand children, using parental and infant data from the Growing Up in New Zealand (GUiNZ) cohort. Obesity was defined as body mass index (BMI) for age and sex ≥ 95th percentile. Data on GUiNZ children were used for derivation (n = 1731) and internal validation (n = 713). External validation was performed using data from the Prevention of Overweight in Infancy Study (POI, n = 383) and Pacific Islands Families Study (PIF, n = 135) cohorts. The final model included: birth weight, maternal smoking during pregnancy, maternal pre-pregnancy BMI, paternal BMI, and infant weight gain. Discrimination accuracy was adequate [AUROC = 0.74 (0.71–0.77)], remained so when validated internally [AUROC = 0.73 (0.68–0.78)] and externally on PIF [AUROC = 0.74 [0.66–0.82)] and POI [AUROC = 0.80 (0.71–0.90)]. Positive predictive values were variable but low across the risk threshold range (GUiNZ derivation 19–54%; GUiNZ validation 19–48%; and POI 8–24%), although more consistent in the PIF cohort (52–61%), all indicating high rates of false positives. Although this early childhood obesity prediction model could inform early obesity prevention, high rates of false positives might create unwarranted anxiety for families.
format article
author Éadaoin M. Butler
Avinesh Pillai
Susan M. B. Morton
Blake M. Seers
Caroline G. Walker
Kien Ly
El-Shadan Tautolo
Marewa Glover
Rachael W. Taylor
Wayne S. Cutfield
José G. B. Derraik
COPABS Collaborators
author_facet Éadaoin M. Butler
Avinesh Pillai
Susan M. B. Morton
Blake M. Seers
Caroline G. Walker
Kien Ly
El-Shadan Tautolo
Marewa Glover
Rachael W. Taylor
Wayne S. Cutfield
José G. B. Derraik
COPABS Collaborators
author_sort Éadaoin M. Butler
title A prediction model for childhood obesity in New Zealand
title_short A prediction model for childhood obesity in New Zealand
title_full A prediction model for childhood obesity in New Zealand
title_fullStr A prediction model for childhood obesity in New Zealand
title_full_unstemmed A prediction model for childhood obesity in New Zealand
title_sort prediction model for childhood obesity in new zealand
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/2b2e43ec0dd945f7902cb27db5688c81
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