Does height catch-up in schoolchildren have an effect on bone mass in adolescents? Analysis in a Brazilian birth cohort.
J Pediatr (Rio J)
; 95(5): 607-613, 2019.
Article
em En
| MEDLINE
| ID: mdl-31327499
ABSTRACT
OBJECTIVE:
To analyze the effect of height catch-up at school age on the bone mass of adolescents of a Brazilian birth cohort.METHODS:
A cohort study using data obtained from the three moments (birth, 7/9 years and 18/19 years of age) of the Cohorts-RPS study. Height catch-up was defined based on the difference between the schoolchild's z-score and birth z-score. The adolescents' bone mineral mass was analyzed using the z-score index for the lumbar spine measured by dual emission X-ray absorptiometry. A theoretical model was developed for the proposed analysis using directed acyclic graphs paired through the nearest-neighbor matching propensity score using the STATA software, version 14.0. The level of significance was set at 5%.RESULTS:
Of the 297 studied children, 24.5% achieved height catch-up. The bone mass below the expected for age was observed in 5.39% of the subjects. The mean lumbar spine z-score was -0.34 (±1.01). After the adjustment, no effect was observed between height catch-up at school age and bone mass in adolescents (Coeff=0.598; 95% CI -0.117 to 1.313; p=0.101).CONCLUSION:
Even using the directed acyclic graphs and the causal inference method by adjusting the propensity score, the height catch-up did not seem to affect bone mass in adolescents, a result perhaps related to the sample size.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Estatura
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Desenvolvimento Ósseo
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Densidade Óssea
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article