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Title: Early growth characteristics and the risk of reduced lung function and asthma: A meta-analysis of 25,000 children.
Authors: den Dekker, H. T.
Sonnenschein-van der Voort, A. M.
de Jongste, J. C.
Anessi-Maesano, I.
Arshad, S. H.
Barros, H.
Beardsmore, Caroline S.
Bisgaard, H.
Phar, S. C.
Craig, L.
Devereux, G.
van der Ent, C. K.
Esplugues, A.
Fantini, M. P.
Flexeder, C.
Frey, U.
Forastiere, F.
Gehring, U.
Gori, D.
van der Gugten, A. C.
Henderson, A. J.
Heude, B.
Ibarluzea, J.
Inskip, H. M.
Keil, T.
Kogevinas, M.
Kreiner-Møller, E.
Kuehni, C. E.
Lau, S.
Mélen, E.
Mommers, M.
Morales, E.
Penders, J.
Pike, K. C.
Porta, D.
Reiss, I. K.
Roberts, G.
Schmidt, A.
Schultz, E. S.
Schulz, H.
Sunyer, J.
Torrent, M.
Vassilaki, M.
Wijga, A. H.
Zabaleta, C.
Jaddoe, V. W.
Duijts, L.
First Published: 11-Nov-2015
Publisher: Elsevier, for American Academy of Allergy, Asthma and Immunology, Mosby
Citation: Journal of Allergy and Clinical Immunology, 2016, 137 (4), pp. 1026-1035
Abstract: BACKGROUND: Children born preterm or with a small size for gestational age are at increased risk for childhood asthma. OBJECTIVE: We sought to assess the hypothesis that these associations are explained by reduced airway patency. METHODS: We used individual participant data of 24,938 children from 24 birth cohorts to examine and meta-analyze the associations of gestational age, size for gestational age, and infant weight gain with childhood lung function and asthma (age range, 3.9-19.1 years). Second, we explored whether these lung function outcomes mediated the associations of early growth characteristics with childhood asthma. RESULTS: Children born with a younger gestational age had a lower FEV1, FEV1/forced vital capacity (FVC) ratio, and forced expiratory volume after exhaling 75% of vital capacity (FEF75), whereas those born with a smaller size for gestational age at birth had a lower FEV1 but higher FEV1/FVC ratio (P < .05). Greater infant weight gain was associated with higher FEV1 but lower FEV1/FVC ratio and FEF75 in childhood (P < .05). All associations were present across the full range and independent of other early-life growth characteristics. Preterm birth, low birth weight, and greater infant weight gain were associated with an increased risk of childhood asthma (pooled odds ratio, 1.34 [95% CI, 1.15-1.57], 1.32 [95% CI, 1.07-1.62], and 1.27 [95% CI, 1.21-1.34], respectively). Mediation analyses suggested that FEV1, FEV1/FVC ratio, and FEF75 might explain 7% (95% CI, 2% to 10%) to 45% (95% CI, 15% to 81%) of the associations between early growth characteristics and asthma. CONCLUSIONS: Younger gestational age, smaller size for gestational age, and greater infant weight gain were across the full ranges associated with childhood lung function. These associations explain the risk of childhood asthma to a substantial extent.
DOI Link: 10.1016/j.jaci.2015.08.050
ISSN: 0091-6749
eISSN: 1097-6825
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Infection, Immunity and Inflammation

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