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Birth weight and prematurity with lung function at ~17.5 years: "Children of 1997" birth cohort.


ABSTRACT: We aimed to determine if prematurity and lower birth weight are associated with poorer lung function in a non-western developed setting with less marked confounding by socioeconomic position. Using multivariable linear regression in Hong Kong's "Children of 1997" birth cohort, adjusted associations of prematurity and birth weight with forced expiratory volume in 1?second (FEV1), forced vital capacity (FVC), and forced expiratory flow at 25-75% of the pulmonary volume (FEF25-75%) at ~17.5 years were assessed. Associations for birth weight were stronger in boys for FEV1 (boys: 0.31?L, 95% confidence interval (CI) 0.24 to 0.38, girls: 0.18?L, 95% CI 0.12 to 0.25), FVC (boys: 0.36?L, 95% CI 0.27 to 0.44, girls: 0.22?L, 95% CI 0.15 to 0.28) and FEF25-75% (boys: 0.35?L, 95% CI 0.21 to 0.49, girls: 0.22?L, 95% CI 0.09 to 0.34) adjusted for age, socioeconomic position and infant and maternal characteristics. Similarly adjusted, preterm birth (compared to full-term birth) was associated with lower FEV1/FVC and FEF25-75%. Thus, associations of lower birth weight, especially in boys, and prematurity with poorer lung function at 17.5 years were found. Identifying underlying mechanism might contribute to the improvement of pulmonary health and the prevention of adult respiratory illness.

SUBMITTER: He B 

PROVIDER: S-EPMC6962201 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Birth weight and prematurity with lung function at ~17.5 years: "Children of 1997" birth cohort.

He Baoting B   Kwok Man Ki MK   Au Yeung Shiu Lun SL   Lin Shi Lin SL   Leung June Yue Yan JYY   Hui Lai Ling LL   Li Albert M AM   Leung Gabriel M GM   Schooling C Mary CM  

Scientific reports 20200115 1


We aimed to determine if prematurity and lower birth weight are associated with poorer lung function in a non-western developed setting with less marked confounding by socioeconomic position. Using multivariable linear regression in Hong Kong's "Children of 1997" birth cohort, adjusted associations of prematurity and birth weight with forced expiratory volume in 1 second (FEV<sub>1</sub>), forced vital capacity (FVC), and forced expiratory flow at 25-75% of the pulmonary volume (FEF<sub>25-75%</  ...[more]

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