The association between birthweight and asthma, eczema and rhinoconjunctivitisis conflicting.
To examine the association between birthweight and symptoms of asthma, eczema and rhinoconjunctivitis.
Parents or guardians of children aged 6–7 yr completed written questionnaires about symptoms of asthma, rhinoconjunctivitis and eczema, and several risk factors, including birthweight.
There were 162,324 children from 60 centres in 26 countries. Low birthweight(<2.5 kg) was associated with an increased risk of symptoms of asthma (current wheeze odds ratio = 1.20; 95% confidence interval = 1.12–1.30). Low birthweight was associated with a lower risk of eczema ever. Low birthweight was not associated with rhinoconjunctivitis. Large babies (birthweight ≥4.5 kg) were not associated with any of these outcomes.
This study has confirmed that low birthweight is a risk factor for symptoms of asthma, but not for rhinoconjunctivitis. The findings for eczema are equivocal.
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 February 2014.
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#21,659,248
of 34,410,315 outputs
Outputs from Pediatric Allergy & Immunology
#2,001
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Outputs of similar age
#162,120
of 269,875 outputs
Outputs of similar age from Pediatric Allergy & Immunology
#17
of 23 outputs
Altmetric has tracked 34,410,315 research outputs across all sources so far. This one is in the 36th percentile – i.e., 36% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,996 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.0. This one is in the 31st percentile – i.e., 31% of its peers scored the same or lower than it.
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